diff --git a/dev-test/backends/azure/config.yml b/dev-test/backends/azure/config.yml
index 1fed4943d378..84f2c5faa972 100644
--- a/dev-test/backends/azure/config.yml
+++ b/dev-test/backends/azure/config.yml
@@ -30,6 +30,7 @@ collections:
       - label: Publish Date
         name: date
         widget: datetime
+        format: 'YYYY-MM-DDTHH:mm'
       - label: Description
         name: description
         widget: text
diff --git a/dev-test/backends/bitbucket/config.yml b/dev-test/backends/bitbucket/config.yml
index b7ad4d5c13eb..f3a5d24a1e2c 100644
--- a/dev-test/backends/bitbucket/config.yml
+++ b/dev-test/backends/bitbucket/config.yml
@@ -28,6 +28,7 @@ collections:
       - label: Publish Date
         name: date
         widget: datetime
+        format: 'YYYY-MM-DDTHH:mm'
       - label: Description
         name: description
         widget: text
diff --git a/dev-test/backends/git-gateway/config.yml b/dev-test/backends/git-gateway/config.yml
index d6c689c80fac..b0a27e01b263 100644
--- a/dev-test/backends/git-gateway/config.yml
+++ b/dev-test/backends/git-gateway/config.yml
@@ -27,6 +27,7 @@ collections:
       - label: Publish Date
         name: date
         widget: datetime
+        format: 'YYYY-MM-DDTHH:mm'
       - label: Description
         name: description
         widget: text
diff --git a/dev-test/backends/gitea/config.yml b/dev-test/backends/gitea/config.yml
index 483c154e15bb..1552ad473292 100644
--- a/dev-test/backends/gitea/config.yml
+++ b/dev-test/backends/gitea/config.yml
@@ -28,6 +28,7 @@ collections:
       - label: Publish Date
         name: date
         widget: datetime
+        format: 'YYYY-MM-DDTHH:mm'
       - label: Description
         name: description
         widget: text
diff --git a/dev-test/backends/github/config.yml b/dev-test/backends/github/config.yml
index bf5ff5a10166..0f024c067bd6 100644
--- a/dev-test/backends/github/config.yml
+++ b/dev-test/backends/github/config.yml
@@ -28,6 +28,7 @@ collections:
       - label: Publish Date
         name: date
         widget: datetime
+        format: 'YYYY-MM-DDTHH:mm'
       - label: Description
         name: description
         widget: text
diff --git a/dev-test/backends/gitlab/config.yml b/dev-test/backends/gitlab/config.yml
index d7650a96c206..0b3836a1d8f5 100644
--- a/dev-test/backends/gitlab/config.yml
+++ b/dev-test/backends/gitlab/config.yml
@@ -28,6 +28,7 @@ collections:
       - label: Publish Date
         name: date
         widget: datetime
+        format: 'YYYY-MM-DDTHH:mm'
       - label: Description
         name: description
         widget: text
diff --git a/dev-test/backends/proxy/config.yml b/dev-test/backends/proxy/config.yml
index d5647311a18d..c8cbc9b92b9e 100644
--- a/dev-test/backends/proxy/config.yml
+++ b/dev-test/backends/proxy/config.yml
@@ -32,6 +32,7 @@ collections:
       - label: Publish Date
         name: date
         widget: datetime
+        format: 'YYYY-MM-DDTHH:mm'
       - label: Description
         name: description
         widget: text
diff --git a/package-lock.json b/package-lock.json
index f4425304ecd5..397f417bd711 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -33206,12 +33206,12 @@
       }
     },
     "packages/decap-cms": {
-      "version": "3.1.7",
+      "version": "3.1.8",
       "license": "MIT",
       "dependencies": {
         "codemirror": "^5.46.0",
         "create-react-class": "^15.7.0",
-        "decap-cms-app": "^3.1.7",
+        "decap-cms-app": "^3.1.8",
         "decap-cms-media-library-cloudinary": "^3.0.3",
         "decap-cms-media-library-uploadcare": "^3.0.2",
         "file-loader": "^6.2.0",
@@ -33221,7 +33221,7 @@
       }
     },
     "packages/decap-cms-app": {
-      "version": "3.1.7",
+      "version": "3.1.8",
       "license": "MIT",
       "dependencies": {
         "@emotion/react": "^11.11.1",
@@ -33230,23 +33230,23 @@
         "dayjs": "^1.11.10",
         "decap-cms-backend-aws-cognito-github-proxy": "^3.1.2",
         "decap-cms-backend-azure": "^3.1.1",
-        "decap-cms-backend-bitbucket": "^3.1.1",
+        "decap-cms-backend-bitbucket": "^3.1.2",
         "decap-cms-backend-git-gateway": "^3.1.1",
-        "decap-cms-backend-github": "^3.1.1",
-        "decap-cms-backend-gitlab": "^3.1.2",
+        "decap-cms-backend-github": "^3.1.2",
+        "decap-cms-backend-gitlab": "^3.1.3",
         "decap-cms-backend-proxy": "^3.1.1",
         "decap-cms-backend-test": "^3.1.1",
         "decap-cms-core": "^3.3.6",
         "decap-cms-editor-component-image": "^3.1.1",
         "decap-cms-lib-auth": "^3.0.5",
-        "decap-cms-lib-util": "^3.0.3",
+        "decap-cms-lib-util": "^3.0.4",
         "decap-cms-lib-widgets": "^3.0.2",
         "decap-cms-locales": "^3.1.4",
         "decap-cms-ui-default": "^3.1.1",
         "decap-cms-widget-boolean": "^3.1.1",
         "decap-cms-widget-code": "^3.1.2",
         "decap-cms-widget-colorstring": "^3.1.1",
-        "decap-cms-widget-datetime": "^3.1.2",
+        "decap-cms-widget-datetime": "^3.1.3",
         "decap-cms-widget-file": "^3.1.1",
         "decap-cms-widget-image": "^3.1.1",
         "decap-cms-widget-list": "^3.1.1",
@@ -33315,7 +33315,7 @@
       }
     },
     "packages/decap-cms-backend-bitbucket": {
-      "version": "3.1.1",
+      "version": "3.1.2",
       "license": "MIT",
       "dependencies": {
         "common-tags": "^1.8.0",
@@ -33388,7 +33388,7 @@
       }
     },
     "packages/decap-cms-backend-github": {
-      "version": "3.1.1",
+      "version": "3.1.2",
       "license": "MIT",
       "dependencies": {
         "apollo-cache-inmemory": "^1.6.2",
@@ -33413,7 +33413,7 @@
       }
     },
     "packages/decap-cms-backend-gitlab": {
-      "version": "3.1.2",
+      "version": "3.1.3",
       "license": "MIT",
       "dependencies": {
         "apollo-cache-inmemory": "^1.6.2",
@@ -33610,7 +33610,7 @@
       }
     },
     "packages/decap-cms-lib-util": {
-      "version": "3.0.3",
+      "version": "3.0.4",
       "license": "MIT",
       "dependencies": {
         "js-sha256": "^0.9.0",
@@ -33710,7 +33710,7 @@
       }
     },
     "packages/decap-cms-widget-datetime": {
-      "version": "3.1.2",
+      "version": "3.1.3",
       "license": "MIT",
       "dependencies": {
         "dayjs": "^1.11.10"
@@ -34008,7 +34008,7 @@
       }
     },
     "packages/decap-server": {
-      "version": "3.0.3",
+      "version": "3.0.4",
       "license": "MIT",
       "dependencies": {
         "@hapi/joi": "^17.0.2",
@@ -34032,7 +34032,7 @@
         "@types/morgan": "^1.7.37",
         "@types/node": "^16.0.0",
         "@types/vfile-message": "^2.0.0",
-        "decap-cms-lib-util": "^3.0.3",
+        "decap-cms-lib-util": "^3.0.4",
         "jest": "^27.0.0",
         "nodemon": "^2.0.2",
         "ts-jest": "^27.0.0",
diff --git a/packages/decap-cms-app/CHANGELOG.md b/packages/decap-cms-app/CHANGELOG.md
index 143e412cc26f..226592b8dd2e 100644
--- a/packages/decap-cms-app/CHANGELOG.md
+++ b/packages/decap-cms-app/CHANGELOG.md
@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [3.1.8](https://github.com/decaporg/decap-cms/compare/decap-cms-app@3.1.7...decap-cms-app@3.1.8) (2024-04-03)
+
+**Note:** Version bump only for package decap-cms-app
+
 ## [3.1.7](https://github.com/decaporg/decap-cms/compare/decap-cms-app@3.1.6...decap-cms-app@3.1.7) (2024-04-02)
 
 **Note:** Version bump only for package decap-cms-app
diff --git a/packages/decap-cms-app/package.json b/packages/decap-cms-app/package.json
index abef1f2e1366..6c0cb901a4d8 100644
--- a/packages/decap-cms-app/package.json
+++ b/packages/decap-cms-app/package.json
@@ -1,7 +1,7 @@
 {
   "name": "decap-cms-app",
   "description": "An extensible, open source, Git-based, React CMS for static sites. Reusable congiuration with React as peer.",
-  "version": "3.1.7",
+  "version": "3.1.8",
   "homepage": "https://www.decapcms.org",
   "repository": "https://github.com/decaporg/decap-cms/tree/main/packages/decap-cms-app",
   "bugs": "https://github.com/decaporg/decap-cms/issues",
@@ -32,23 +32,23 @@
     "dayjs": "^1.11.10",
     "decap-cms-backend-aws-cognito-github-proxy": "^3.1.2",
     "decap-cms-backend-azure": "^3.1.1",
-    "decap-cms-backend-bitbucket": "^3.1.1",
+    "decap-cms-backend-bitbucket": "^3.1.2",
     "decap-cms-backend-git-gateway": "^3.1.1",
-    "decap-cms-backend-github": "^3.1.1",
-    "decap-cms-backend-gitlab": "^3.1.2",
+    "decap-cms-backend-github": "^3.1.2",
+    "decap-cms-backend-gitlab": "^3.1.3",
     "decap-cms-backend-proxy": "^3.1.1",
     "decap-cms-backend-test": "^3.1.1",
     "decap-cms-core": "^3.3.6",
     "decap-cms-editor-component-image": "^3.1.1",
     "decap-cms-lib-auth": "^3.0.5",
-    "decap-cms-lib-util": "^3.0.3",
+    "decap-cms-lib-util": "^3.0.4",
     "decap-cms-lib-widgets": "^3.0.2",
     "decap-cms-locales": "^3.1.4",
     "decap-cms-ui-default": "^3.1.1",
     "decap-cms-widget-boolean": "^3.1.1",
     "decap-cms-widget-code": "^3.1.2",
     "decap-cms-widget-colorstring": "^3.1.1",
-    "decap-cms-widget-datetime": "^3.1.2",
+    "decap-cms-widget-datetime": "^3.1.3",
     "decap-cms-widget-file": "^3.1.1",
     "decap-cms-widget-image": "^3.1.1",
     "decap-cms-widget-list": "^3.1.1",
diff --git a/packages/decap-cms-backend-bitbucket/CHANGELOG.md b/packages/decap-cms-backend-bitbucket/CHANGELOG.md
index 2f39c6d7db59..c3ff4ebf4f1c 100644
--- a/packages/decap-cms-backend-bitbucket/CHANGELOG.md
+++ b/packages/decap-cms-backend-bitbucket/CHANGELOG.md
@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [3.1.2](https://github.com/decaporg/decap-cms/compare/decap-cms-backend-bitbucket@3.1.1...decap-cms-backend-bitbucket@3.1.2) (2024-04-03)
+
+**Note:** Version bump only for package decap-cms-backend-bitbucket
+
 ## [3.1.1](https://github.com/decaporg/decap-cms/compare/decap-cms-backend-bitbucket@3.1.0-beta.1...decap-cms-backend-bitbucket@3.1.1) (2024-03-21)
 
 **Note:** Version bump only for package decap-cms-backend-bitbucket
diff --git a/packages/decap-cms-backend-bitbucket/package.json b/packages/decap-cms-backend-bitbucket/package.json
index fbd92367d054..60b8626e23f9 100644
--- a/packages/decap-cms-backend-bitbucket/package.json
+++ b/packages/decap-cms-backend-bitbucket/package.json
@@ -1,7 +1,7 @@
 {
   "name": "decap-cms-backend-bitbucket",
   "description": "Bitbucket backend for Decap CMS",
-  "version": "3.1.1",
+  "version": "3.1.2",
   "repository": "https://github.com/decaporg/decap-cms/tree/main/packages/decap-cms-backend-bitbucket",
   "bugs": "https://github.com/decaporg/decap-cms/issues",
   "module": "dist/esm/index.js",
diff --git a/packages/decap-cms-backend-bitbucket/src/implementation.ts b/packages/decap-cms-backend-bitbucket/src/implementation.ts
index e58afed51a64..2f6ce39d706e 100644
--- a/packages/decap-cms-backend-bitbucket/src/implementation.ts
+++ b/packages/decap-cms-backend-bitbucket/src/implementation.ts
@@ -60,6 +60,8 @@ type BitbucketStatusComponent = {
   status: string;
 };
 
+const { fetchWithTimeout: fetch } = unsentRequest;
+
 // Implementation wrapper class
 export default class BitbucketBackend implements Implementation {
   lock: AsyncLock;
@@ -72,6 +74,7 @@ export default class BitbucketBackend implements Implementation {
     initialWorkflowStatus: string;
   };
   repo: string;
+  isBranchConfigured: boolean;
   branch: string;
   apiRoot: string;
   baseUrl: string;
@@ -111,6 +114,7 @@ export default class BitbucketBackend implements Implementation {
 
     this.repo = config.backend.repo || '';
     this.branch = config.backend.branch || 'master';
+    this.isBranchConfigured = config.backend.branch ? true : false;
     this.apiRoot = config.backend.api_root || 'https://api.bitbucket.org/2.0';
     this.baseUrl = config.base_url || '';
     this.siteId = config.site_id || '';
@@ -190,6 +194,18 @@ export default class BitbucketBackend implements Implementation {
 
   async authenticate(state: Credentials) {
     this.token = state.token as string;
+    if (!this.isBranchConfigured) {
+      const repo = await fetch(`${this.apiRoot}/repositories/${this.repo}`, {
+        headers: {
+          Authorization: `token ${this.token}`,
+        },
+      })
+        .then(res => res.json())
+        .catch(() => null);
+      if (repo) {
+        this.branch = repo.mainbranch.name;
+      }
+    }
     this.refreshToken = state.refresh_token;
     this.api = new API({
       requestFunction: this.apiRequestFunction,
@@ -216,7 +232,16 @@ export default class BitbucketBackend implements Implementation {
     if (!isCollab) {
       throw new Error('Your BitBucket user account does not have access to this repo.');
     }
-
+    // if (!this.isBranchConfigured) {
+    //   const defaultBranchName = await getDefaultBranchName({
+    //     backend: 'bitbucket',
+    //     repo: this.repo,
+    //     token: this.token,
+    //   });
+    //   if (defaultBranchName) {
+    //     this.branch = defaultBranchName;
+    //   }
+    // }
     const user = await this.api.user();
 
     // Authorized user
diff --git a/packages/decap-cms-backend-github/CHANGELOG.md b/packages/decap-cms-backend-github/CHANGELOG.md
index 2319955e8499..abfc213ed331 100644
--- a/packages/decap-cms-backend-github/CHANGELOG.md
+++ b/packages/decap-cms-backend-github/CHANGELOG.md
@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [3.1.2](https://github.com/decaporg/decap-cms/compare/decap-cms-backend-github@3.1.1...decap-cms-backend-github@3.1.2) (2024-04-03)
+
+**Note:** Version bump only for package decap-cms-backend-github
+
 ## [3.1.1](https://github.com/decaporg/decap-cms/compare/decap-cms-backend-github@3.1.0-beta.2...decap-cms-backend-github@3.1.1) (2024-03-21)
 
 **Note:** Version bump only for package decap-cms-backend-github
diff --git a/packages/decap-cms-backend-github/package.json b/packages/decap-cms-backend-github/package.json
index 33e4a07b3248..6fe111974d89 100644
--- a/packages/decap-cms-backend-github/package.json
+++ b/packages/decap-cms-backend-github/package.json
@@ -1,7 +1,7 @@
 {
   "name": "decap-cms-backend-github",
   "description": "GitHub backend for Decap CMS",
-  "version": "3.1.1",
+  "version": "3.1.2",
   "license": "MIT",
   "repository": "https://github.com/decaporg/decap-cms/tree/main/packages/decap-cms-backend-github",
   "bugs": "https://github.com/decaporg/decap-cms/issues",
diff --git a/packages/decap-cms-backend-github/src/implementation.tsx b/packages/decap-cms-backend-github/src/implementation.tsx
index f5412b974c2d..31149d8e9f26 100644
--- a/packages/decap-cms-backend-github/src/implementation.tsx
+++ b/packages/decap-cms-backend-github/src/implementation.tsx
@@ -69,6 +69,7 @@ export default class GitHub implements Implementation {
     initialWorkflowStatus: string;
   };
   originRepo: string;
+  isBranchConfigured: boolean;
   repo?: string;
   openAuthoringEnabled: boolean;
   useOpenAuthoring?: boolean;
@@ -106,7 +107,7 @@ export default class GitHub implements Implementation {
     }
 
     this.api = this.options.API || null;
-
+    this.isBranchConfigured = config.backend.branch ? true : false;
     this.openAuthoringEnabled = config.backend.open_authoring || false;
     if (this.openAuthoringEnabled) {
       if (!this.options.useWorkflow) {
@@ -320,6 +321,18 @@ export default class GitHub implements Implementation {
 
   async authenticate(state: Credentials) {
     this.token = state.token as string;
+    // Query the default branch name when the `branch` property is missing
+    // in the config file
+    if (!this.isBranchConfigured) {
+      const repoInfo = await fetch(`${this.apiRoot}/repos/${this.originRepo}`, {
+        headers: { Authorization: `token ${this.token}` },
+      })
+        .then(res => res.json())
+        .catch(() => null);
+      if (repoInfo && repoInfo.default_branch) {
+        this.branch = repoInfo.default_branch;
+      }
+    }
     const apiCtor = this.useGraphql ? GraphQLAPI : API;
     this.api = new apiCtor({
       token: this.token,
@@ -354,6 +367,13 @@ export default class GitHub implements Implementation {
       throw new Error('Your GitHub user account does not have access to this repo.');
     }
 
+    // if (!this.isBranchConfigured) {
+    //   const defaultBranchName = await this.api.getDefaultBranchName()
+    //   if (defaultBranchName) {
+    //     this.branch = defaultBranchName;
+    //   }
+    // }
+
     // Authorized user
     return { ...user, token: state.token as string, useOpenAuthoring: this.useOpenAuthoring };
   }
diff --git a/packages/decap-cms-backend-gitlab/CHANGELOG.md b/packages/decap-cms-backend-gitlab/CHANGELOG.md
index ced17215a384..ccadf761e4f2 100644
--- a/packages/decap-cms-backend-gitlab/CHANGELOG.md
+++ b/packages/decap-cms-backend-gitlab/CHANGELOG.md
@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [3.1.3](https://github.com/decaporg/decap-cms/compare/decap-cms-backend-gitlab@3.1.2...decap-cms-backend-gitlab@3.1.3) (2024-04-03)
+
+**Note:** Version bump only for package decap-cms-backend-gitlab
+
 ## [3.1.2](https://github.com/decaporg/decap-cms/compare/decap-cms-backend-gitlab@3.1.1...decap-cms-backend-gitlab@3.1.2) (2024-03-21)
 
 **Note:** Version bump only for package decap-cms-backend-gitlab
diff --git a/packages/decap-cms-backend-gitlab/package.json b/packages/decap-cms-backend-gitlab/package.json
index a8954a6bb929..8648d4a7ffb1 100644
--- a/packages/decap-cms-backend-gitlab/package.json
+++ b/packages/decap-cms-backend-gitlab/package.json
@@ -1,7 +1,7 @@
 {
   "name": "decap-cms-backend-gitlab",
   "description": "GitLab backend for Decap CMS",
-  "version": "3.1.2",
+  "version": "3.1.3",
   "repository": "https://github.com/decaporg/decap-cms/tree/main/packages/decap-cms-backend-gitlab",
   "bugs": "https://github.com/decaporg/decap-cms/issues",
   "license": "MIT",
diff --git a/packages/decap-cms-backend-gitlab/src/__tests__/gitlab.spec.js b/packages/decap-cms-backend-gitlab/src/__tests__/gitlab.spec.js
index e5afc7ce783d..4953ac3e4a0d 100644
--- a/packages/decap-cms-backend-gitlab/src/__tests__/gitlab.spec.js
+++ b/packages/decap-cms-backend-gitlab/src/__tests__/gitlab.spec.js
@@ -109,6 +109,7 @@ const resp = {
           access_level: 30,
         },
       },
+      default_branch: 'main',
     },
     readOnly: {
       permissions: {
@@ -194,7 +195,16 @@ describe('gitlab backend', () => {
       .reply(200, userResponse || resp.user.success);
 
     api
+      // The `authenticate` method of the API class from netlify-cms-backend-gitlab
+      // calls the same endpoint twice for gettng a single project.
+      // First time through `this.api.hasWriteAccess()
+      // Second time through the method `getDefaultBranchName` from lib-util
+      // As a result, we need to repeat the same response twice.
+      // Otherwise, we'll get an error: "No match for request to
+      // https://gitlab.com/api/v4"
+
       .get(expectedRepoUrl)
+      .times(2)
       .query(true)
       .reply(200, projectResponse || resp.project.success);
   }
diff --git a/packages/decap-cms-backend-gitlab/src/implementation.ts b/packages/decap-cms-backend-gitlab/src/implementation.ts
index 50853f438319..769257f0bea3 100644
--- a/packages/decap-cms-backend-gitlab/src/implementation.ts
+++ b/packages/decap-cms-backend-gitlab/src/implementation.ts
@@ -21,6 +21,7 @@ import {
   allEntriesByFolder,
   filterByExtension,
   branchFromContentKey,
+  getDefaultBranchName,
 } from 'decap-cms-lib-util';
 
 import AuthenticationPage from './AuthenticationPage';
@@ -53,6 +54,7 @@ export default class GitLab implements Implementation {
     initialWorkflowStatus: string;
   };
   repo: string;
+  isBranchConfigured: boolean;
   branch: string;
   apiRoot: string;
   token: string | null;
@@ -84,6 +86,7 @@ export default class GitLab implements Implementation {
 
     this.repo = config.backend.repo || '';
     this.branch = config.backend.branch || 'master';
+    this.isBranchConfigured = config.backend.branch ? true : false;
     this.apiRoot = config.backend.api_root || 'https://gitlab.com/api/v4';
     this.token = '';
     this.squashMerges = config.backend.squash_merges || false;
@@ -150,6 +153,16 @@ export default class GitLab implements Implementation {
       throw new Error('Your GitLab user account does not have access to this repo.');
     }
 
+    if (!this.isBranchConfigured) {
+      const defaultBranchName = await getDefaultBranchName({
+        backend: 'gitlab',
+        repo: this.repo,
+        token: this.token,
+      });
+      if (defaultBranchName) {
+        this.branch = defaultBranchName;
+      }
+    }
     // Authorized user
     return { ...user, login: user.username, token: state.token as string };
   }
diff --git a/packages/decap-cms-lib-util/CHANGELOG.md b/packages/decap-cms-lib-util/CHANGELOG.md
index f2436c8a345d..e2afd5e37df9 100644
--- a/packages/decap-cms-lib-util/CHANGELOG.md
+++ b/packages/decap-cms-lib-util/CHANGELOG.md
@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [3.0.4](https://github.com/decaporg/decap-cms/compare/decap-cms-lib-util@3.0.3...decap-cms-lib-util@3.0.4) (2024-04-03)
+
+**Note:** Version bump only for package decap-cms-lib-util
+
 ## [3.0.3](https://github.com/decaporg/decap-cms/compare/decap-cms-lib-util@3.0.2...decap-cms-lib-util@3.0.3) (2024-03-21)
 
 **Note:** Version bump only for package decap-cms-lib-util
diff --git a/packages/decap-cms-lib-util/package.json b/packages/decap-cms-lib-util/package.json
index b4946d411493..b874570e96f4 100644
--- a/packages/decap-cms-lib-util/package.json
+++ b/packages/decap-cms-lib-util/package.json
@@ -1,7 +1,7 @@
 {
   "name": "decap-cms-lib-util",
   "description": "Shared utilities for Decap CMS.",
-  "version": "3.0.3",
+  "version": "3.0.4",
   "repository": "https://github.com/decaporg/decap-cms/tree/main/packages/decap-cms-lib-util",
   "bugs": "https://github.com/decaporg/decap-cms/issues",
   "module": "dist/esm/index.js",
diff --git a/packages/decap-cms-lib-util/src/API.ts b/packages/decap-cms-lib-util/src/API.ts
index f328cf78292e..277f045d3603 100644
--- a/packages/decap-cms-lib-util/src/API.ts
+++ b/packages/decap-cms-lib-util/src/API.ts
@@ -40,6 +40,26 @@ class RateLimitError extends Error {
   }
 }
 
+async function parseJsonResponse(response: Response) {
+  const json = await response.json();
+  if (!response.ok) {
+    return Promise.reject(json);
+  }
+  return json;
+}
+
+export function parseResponse(response: Response) {
+  const contentType = response.headers.get('Content-Type');
+  if (contentType && contentType.match(/json/)) {
+    return parseJsonResponse(response);
+  }
+  const textPromise = response.text().then(text => {
+    if (!response.ok) return Promise.reject(text);
+    return text;
+  });
+  return textPromise;
+}
+
 export async function requestWithBackoff(
   api: API,
   req: ApiRequest,
@@ -96,6 +116,140 @@ export async function requestWithBackoff(
   }
 }
 
+// Options is an object which contains all the standard network request properties
+// for modifying HTTP requests and may contains `params` property
+
+type Param = string | number;
+
+type ParamObject = Record<string, Param>;
+
+type HeaderObj = Record<string, string>;
+
+type HeaderConfig = {
+  headers?: HeaderObj;
+  token?: string | undefined;
+};
+
+type Backend = 'github' | 'gitlab' | 'bitbucket';
+
+// RequestConfig contains all the standard properties of a Request object and
+// several custom properties:
+// - "headers" property is an object whose properties and values are string types
+// - `token` property to allow passing tokens for users using a private repo.
+// - `params` property for customizing response
+// - `backend`(compulsory) to specify which backend to be used: Github, Gitlab etc.
+
+type RequestConfig = Omit<RequestInit, 'headers'> &
+  HeaderConfig & {
+    backend: Backend;
+    params?: ParamObject;
+  };
+
+export const apiRoots = {
+  github: 'https://api.github.com',
+  gitlab: 'https://gitlab.com/api/v4',
+  bitbucket: 'https://api.bitbucket.org/2.0',
+};
+
+export const endpointConstants = {
+  singleRepo: {
+    bitbucket: '/repositories',
+    github: '/repos',
+    gitlab: '/projects',
+  },
+};
+
+const api = {
+  buildRequest(req: ApiRequest) {
+    return req;
+  },
+};
+
+function constructUrlWithParams(url: string, params?: ParamObject) {
+  if (params) {
+    const paramList = [];
+    for (const key in params) {
+      paramList.push(`${key}=${encodeURIComponent(params[key])}`);
+    }
+    if (paramList.length) {
+      url += `?${paramList.join('&')}`;
+    }
+  }
+  return url;
+}
+
+async function constructRequestHeaders(headerConfig: HeaderConfig) {
+  const { token, headers } = headerConfig;
+  const baseHeaders: HeaderObj = { 'Content-Type': 'application/json; charset=utf-8', ...headers };
+  if (token) {
+    baseHeaders['Authorization'] = `token ${token}`;
+  }
+  return Promise.resolve(baseHeaders);
+}
+
+function handleRequestError(error: FetchError, responseStatus: number, backend: Backend) {
+  throw new APIError(error.message, responseStatus, backend);
+}
+
+export async function apiRequest(
+  path: string,
+  config: RequestConfig,
+  parser = (response: Response) => parseResponse(response),
+) {
+  const { token, backend, ...props } = config;
+  const options = { cache: 'no-cache', ...props };
+  const headers = await constructRequestHeaders({ headers: options.headers || {}, token });
+  const baseUrl = apiRoots[backend];
+  const url = constructUrlWithParams(`${baseUrl}${path}`, options.params);
+  let responseStatus = 500;
+  try {
+    const req = unsentRequest.fromFetchArguments(url, {
+      ...options,
+      headers,
+    }) as unknown as ApiRequest;
+    const response = await requestWithBackoff(api, req);
+    responseStatus = response.status;
+    const parsedResponse = await parser(response);
+    return parsedResponse;
+  } catch (error) {
+    return handleRequestError(error, responseStatus, backend);
+  }
+}
+
+export async function getDefaultBranchName(configs: {
+  backend: Backend;
+  repo: string;
+  token?: string;
+}) {
+  let apiPath;
+  const { token, backend, repo } = configs;
+  switch (backend) {
+    case 'gitlab': {
+      apiPath = `/projects/${encodeURIComponent(repo)}`;
+      break;
+    }
+    case 'bitbucket': {
+      apiPath = `/repositories/${repo}`;
+      break;
+    }
+    default: {
+      apiPath = `/repos/${repo}`;
+    }
+  }
+  const repoInfo = await apiRequest(apiPath, { token, backend });
+  let defaultBranchName;
+  if (backend === 'bitbucket') {
+    const {
+      mainbranch: { name },
+    } = repoInfo;
+    defaultBranchName = name;
+  } else {
+    const { default_branch } = repoInfo;
+    defaultBranchName = default_branch;
+  }
+  return defaultBranchName;
+}
+
 export async function readFile(
   id: string | null | undefined,
   fetchContent: () => Promise<string | Blob>,
diff --git a/packages/decap-cms-lib-util/src/__tests__/api.spec.js b/packages/decap-cms-lib-util/src/__tests__/api.spec.js
index 675ff0458e36..6cf5e07806d0 100644
--- a/packages/decap-cms-lib-util/src/__tests__/api.spec.js
+++ b/packages/decap-cms-lib-util/src/__tests__/api.spec.js
@@ -1,4 +1,5 @@
 import * as api from '../API';
+
 describe('Api', () => {
   describe('getPreviewStatus', () => {
     it('should return preview status on matching context', () => {
diff --git a/packages/decap-cms-lib-util/src/index.ts b/packages/decap-cms-lib-util/src/index.ts
index 962c91fd3e25..9881366de927 100644
--- a/packages/decap-cms-lib-util/src/index.ts
+++ b/packages/decap-cms-lib-util/src/index.ts
@@ -34,6 +34,7 @@ import {
   getPreviewStatus,
   PreviewState,
   requestWithBackoff,
+  getDefaultBranchName,
   throwOnConflictingBranches,
 } from './API';
 import {
@@ -148,6 +149,7 @@ export const DecapCmsLibUtil = {
   contentKeyFromBranch,
   blobToFileObj,
   requestWithBackoff,
+  getDefaultBranchName,
   allEntriesByFolder,
   AccessTokenError,
   throwOnConflictingBranches,
@@ -204,6 +206,7 @@ export {
   contentKeyFromBranch,
   blobToFileObj,
   requestWithBackoff,
+  getDefaultBranchName,
   allEntriesByFolder,
   AccessTokenError,
   throwOnConflictingBranches,
diff --git a/packages/decap-cms-widget-datetime/CHANGELOG.md b/packages/decap-cms-widget-datetime/CHANGELOG.md
index d1c069c2da2b..42487d4fc4ae 100644
--- a/packages/decap-cms-widget-datetime/CHANGELOG.md
+++ b/packages/decap-cms-widget-datetime/CHANGELOG.md
@@ -3,6 +3,12 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [3.1.3](https://github.com/decaporg/decap-cms/compare/decap-cms-widget-datetime@3.1.2...decap-cms-widget-datetime@3.1.3) (2024-04-03)
+
+### Bug Fixes
+
+- **datetime-widget:** revert default date format to include timezone ([#7165](https://github.com/decaporg/decap-cms/issues/7165)) ([46294d6](https://github.com/decaporg/decap-cms/commit/46294d6fcd7f785f8c6346baeaa703d72b833b3b))
+
 ## [3.1.2](https://github.com/decaporg/decap-cms/compare/decap-cms-widget-datetime@3.1.1...decap-cms-widget-datetime@3.1.2) (2024-03-29)
 
 **Note:** Version bump only for package decap-cms-widget-datetime
diff --git a/packages/decap-cms-widget-datetime/package.json b/packages/decap-cms-widget-datetime/package.json
index 8bc473b5bdf0..adef263601ac 100644
--- a/packages/decap-cms-widget-datetime/package.json
+++ b/packages/decap-cms-widget-datetime/package.json
@@ -1,7 +1,7 @@
 {
   "name": "decap-cms-widget-datetime",
   "description": "Widget for editing dates and times in Decap CMS.",
-  "version": "3.1.2",
+  "version": "3.1.3",
   "homepage": "https://www.decapcms.org/docs/widgets/#datetime",
   "repository": "https://github.com/decaporg/decap-cms/tree/main/packages/decap-cms-widget-datetime",
   "bugs": "https://github.com/decaporg/decap-cms/issues",
diff --git a/packages/decap-cms-widget-datetime/src/DateTimeControl.js b/packages/decap-cms-widget-datetime/src/DateTimeControl.js
index 78659bb4af78..42d456bc38bc 100644
--- a/packages/decap-cms-widget-datetime/src/DateTimeControl.js
+++ b/packages/decap-cms-widget-datetime/src/DateTimeControl.js
@@ -64,7 +64,7 @@ class DateTimeControl extends React.Component {
 
   getFormat() {
     const { field } = this.props;
-    const format = field?.get('format') || 'YYYY-MM-DDTHH:mm';
+    const format = field?.get('format') || 'YYYY-MM-DDTHH:mm:ss.SSS[Z]';
     const dateFormat = field?.get('date_format');
     const timeFormat = field?.get('time_format');
     let inputFormat = 'YYYY-MM-DDTHH:mm';
diff --git a/packages/decap-cms/CHANGELOG.md b/packages/decap-cms/CHANGELOG.md
index 501d9a3d5973..105a2cba1e17 100644
--- a/packages/decap-cms/CHANGELOG.md
+++ b/packages/decap-cms/CHANGELOG.md
@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [3.1.8](https://github.com/decaporg/decap-cms/compare/decap-cms@3.1.7...decap-cms@3.1.8) (2024-04-03)
+
+**Note:** Version bump only for package decap-cms
+
 ## [3.1.7](https://github.com/decaporg/decap-cms/compare/decap-cms@3.1.6...decap-cms@3.1.7) (2024-04-02)
 
 **Note:** Version bump only for package decap-cms
diff --git a/packages/decap-cms/package.json b/packages/decap-cms/package.json
index ba530d14ba5d..b28ae9ab7ce6 100644
--- a/packages/decap-cms/package.json
+++ b/packages/decap-cms/package.json
@@ -1,7 +1,7 @@
 {
   "name": "decap-cms",
   "description": "An extensible, open source, Git-based, React CMS for static sites.",
-  "version": "3.1.7",
+  "version": "3.1.8",
   "homepage": "https://www.decapcms.org",
   "repository": "https://github.com/decaporg/decap-cms",
   "bugs": "https://github.com/decaporg/decap-cms/issues",
@@ -22,7 +22,7 @@
   "dependencies": {
     "codemirror": "^5.46.0",
     "create-react-class": "^15.7.0",
-    "decap-cms-app": "^3.1.7",
+    "decap-cms-app": "^3.1.8",
     "decap-cms-media-library-cloudinary": "^3.0.3",
     "decap-cms-media-library-uploadcare": "^3.0.2",
     "file-loader": "^6.2.0",
diff --git a/packages/decap-server/CHANGELOG.md b/packages/decap-server/CHANGELOG.md
index fcfab347958d..7a28cc5de038 100644
--- a/packages/decap-server/CHANGELOG.md
+++ b/packages/decap-server/CHANGELOG.md
@@ -3,6 +3,10 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [3.0.4](https://github.com/decaporg/decap-cms/compare/decap-server@3.0.3...decap-server@3.0.4) (2024-04-03)
+
+**Note:** Version bump only for package decap-server
+
 ## [3.0.3](https://github.com/decaporg/decap-cms/compare/decap-server@3.0.2...decap-server@3.0.3) (2024-03-21)
 
 **Note:** Version bump only for package decap-server
diff --git a/packages/decap-server/package.json b/packages/decap-server/package.json
index 0052615122bc..252e33b46728 100644
--- a/packages/decap-server/package.json
+++ b/packages/decap-server/package.json
@@ -1,7 +1,7 @@
 {
   "name": "decap-server",
   "description": "Proxy server to be used with Decap CMS proxy backend",
-  "version": "3.0.3",
+  "version": "3.0.4",
   "repository": "https://github.com/decaporg/decap-cms/tree/main/packages/decap-server",
   "bugs": "https://github.com/decaporg/decap-cms/issues",
   "license": "MIT",
@@ -39,7 +39,7 @@
     "@types/morgan": "^1.7.37",
     "@types/node": "^16.0.0",
     "@types/vfile-message": "^2.0.0",
-    "decap-cms-lib-util": "^3.0.3",
+    "decap-cms-lib-util": "^3.0.4",
     "jest": "^27.0.0",
     "nodemon": "^2.0.2",
     "ts-jest": "^27.0.0",