diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8d57298..aefe85b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -273,6 +273,20 @@ jobs:
       - run: |
           test "${{ steps.setup-micromamba.outputs.environment-path }}" = ""
 
+  check-micromamba-on-path:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: ./
+        with:
+          init-shell: none
+          environment-file: test/environment.yml
+      - run: |
+          which micromamba | grep /home/runner/micromamba-bin/micromamba
+          type micromamba | grep "micromamba is /home/runner/micromamba-bin/micromamba"
+          which micromamba-shell | grep /home/runner/micromamba-bin/micromamba-shell
+        shell: bash -el {0}
+
   # not properly testable
   # https://github.com/actions/runner/issues/2347
   # https://github.com/orgs/community/discussions/15452
diff --git a/README.md b/README.md
index 614b02a..af664e2 100644
--- a/README.md
+++ b/README.md
@@ -130,7 +130,7 @@ With this, you don't need to initialize your shell and activate the environment
 You can set this behavior by specifying the `generate-run-shell` input (defaults to `true`).
 
 > [!NOTE]
-> Under the hood, this shell wrapper runs `micromamba run -r <root-prefix-path> -n <env-name> <command>` with `<command>` being a file containing the part that you specify in the `run:` section of your workflow. 
+> Under the hood, this shell wrapper runs `micromamba run -r <root-prefix-path> -n <env-name> <command>` with `<command>` being a file containing the part that you specify in the `run:` section of your workflow.
 > See the [official documentation](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#custom-shell) and [ADR 0277](https://github.com/actions/runner/blob/main/docs/adrs/0277-run-action-shell-options.md) for more information about how the `shell:` input works in GitHub Actions.
 
 > [!WARNING]
diff --git a/dist/index.js b/dist/index.js
index c8279b4..06cb844 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -83152,7 +83152,6 @@ var core2 = process.env.MOCKING ? coreMocked : coreDefault;
 var PATHS = {
   micromambaBin: path.join(os2.homedir(), "micromamba-bin", `micromamba${os2.platform() === "win32" ? ".exe" : ""}`),
   micromambaRoot: path.join(os2.homedir(), "micromamba"),
-  micromambaRunShell: "/usr/local/bin/micromamba-shell",
   bashProfile: path.join(os2.homedir(), ".bash_profile"),
   bashrc: path.join(os2.homedir(), ".bashrc")
 };
@@ -83193,6 +83192,7 @@ var inferOptions = (inputs) => {
   const micromambaSource = inputs.micromambaUrl ? (0, import_Either.right)(inputs.micromambaUrl) : (0, import_Either.left)(inputs.micromambaVersion || "latest");
   const writeToCondarc = inputs.condarcFile === void 0;
   const initShell = !inputs.initShell ? ["bash"] : inputs.initShell.includes("none") ? [] : inputs.initShell;
+  const micromambaBinPath = inputs.micromambaBinPath ? path.resolve(untildify(inputs.micromambaBinPath)) : PATHS.micromambaBin;
   return {
     ...inputs,
     writeToCondarc,
@@ -83208,7 +83208,8 @@ var inferOptions = (inputs) => {
     // use a different path than ~/.condarc to avoid messing up the user's condarc
     condarcFile: inputs.condarcFile ? path.resolve(untildify(inputs.condarcFile)) : path.join(path.dirname(PATHS.micromambaBin), ".condarc"),
     // next to the micromamba binary -> easier cleanup
-    micromambaBinPath: inputs.micromambaBinPath ? path.resolve(untildify(inputs.micromambaBinPath)) : PATHS.micromambaBin,
+    micromambaBinPath,
+    micromambaRunShellPath: path.join(path.dirname(micromambaBinPath), "micromamba-shell"),
     micromambaRootPath: inputs.micromambaRootPath ? path.resolve(untildify(inputs.micromambaRootPath)) : PATHS.micromambaRoot
   };
 };
@@ -83551,7 +83552,7 @@ var core6 = process.env.MOCKING ? coreMocked : coreDefault5;
 var downloadMicromamba = (url2) => {
   core6.startGroup("Install micromamba");
   core6.debug(`Downloading micromamba from ${url2} ...`);
-  return import_promises.default.mkdir(import_path3.default.dirname(options.micromambaBinPath), { recursive: true }).then(() => (0, import_tool_cache.downloadTool)(url2, options.micromambaBinPath)).then((_downloadPath) => import_promises.default.chmod(options.micromambaBinPath, 493)).then(() => core6.info(`micromamba installed to ${options.micromambaBinPath}`)).catch((err) => {
+  return import_promises.default.mkdir(import_path3.default.dirname(options.micromambaBinPath), { recursive: true }).then(() => (0, import_tool_cache.downloadTool)(url2, options.micromambaBinPath)).then((_downloadPath) => import_promises.default.chmod(options.micromambaBinPath, 493)).then(() => core6.addPath(import_path3.default.dirname(options.micromambaBinPath))).then(() => core6.info(`micromamba installed to ${options.micromambaBinPath}`)).catch((err) => {
     core6.error(`Error installing micromamba: ${err.message}`);
     throw err;
   }).finally(core6.endGroup);
@@ -83644,10 +83645,10 @@ $MAMBA_EXE run -r $MAMBA_ROOT_PREFIX -n $MAMBA_DEFAULT_ENV $1
 `;
   return determineEnvironmentName(options.environmentName, options.environmentFile).then((environmentName) => {
     const file = micromambaRunShellContents.replace(/\$MAMBA_EXE/g, options.micromambaBinPath).replace(/\$MAMBA_ROOT_PREFIX/g, options.micromambaRootPath).replace(/\$MAMBA_DEFAULT_ENV/g, environmentName);
-    core6.debug(`Writing micromamba run shell to ${PATHS.micromambaRunShell}`);
+    core6.debug(`Writing micromamba run shell to ${options.micromambaRunShellPath}`);
     core6.debug(`File contents:
 "${file}"`);
-    return import_promises.default.writeFile(PATHS.micromambaRunShell, file, { encoding: "utf8", mode: 493 });
+    return import_promises.default.writeFile(options.micromambaRunShellPath, file, { encoding: "utf8", mode: 493 });
   }).finally(core6.endGroup);
 };
 var addEnvironmentPathToOutput = () => {
diff --git a/dist/post.js b/dist/post.js
index 4914b33..62ced82 100644
--- a/dist/post.js
+++ b/dist/post.js
@@ -78415,7 +78415,6 @@ var core = process.env.MOCKING ? coreMocked : coreDefault;
 var PATHS = {
   micromambaBin: path.join(os2.homedir(), "micromamba-bin", `micromamba${os2.platform() === "win32" ? ".exe" : ""}`),
   micromambaRoot: path.join(os2.homedir(), "micromamba"),
-  micromambaRunShell: "/usr/local/bin/micromamba-shell",
   bashProfile: path.join(os2.homedir(), ".bash_profile"),
   bashrc: path.join(os2.homedir(), ".bashrc")
 };
@@ -78456,6 +78455,7 @@ var inferOptions = (inputs) => {
   const micromambaSource = inputs.micromambaUrl ? (0, import_Either.right)(inputs.micromambaUrl) : (0, import_Either.left)(inputs.micromambaVersion || "latest");
   const writeToCondarc = inputs.condarcFile === void 0;
   const initShell = !inputs.initShell ? ["bash"] : inputs.initShell.includes("none") ? [] : inputs.initShell;
+  const micromambaBinPath = inputs.micromambaBinPath ? path.resolve(untildify(inputs.micromambaBinPath)) : PATHS.micromambaBin;
   return {
     ...inputs,
     writeToCondarc,
@@ -78471,7 +78471,8 @@ var inferOptions = (inputs) => {
     // use a different path than ~/.condarc to avoid messing up the user's condarc
     condarcFile: inputs.condarcFile ? path.resolve(untildify(inputs.condarcFile)) : path.join(path.dirname(PATHS.micromambaBin), ".condarc"),
     // next to the micromamba binary -> easier cleanup
-    micromambaBinPath: inputs.micromambaBinPath ? path.resolve(untildify(inputs.micromambaBinPath)) : PATHS.micromambaBin,
+    micromambaBinPath,
+    micromambaRunShellPath: path.join(path.dirname(micromambaBinPath), "micromamba-shell"),
     micromambaRootPath: inputs.micromambaRootPath ? path.resolve(untildify(inputs.micromambaRootPath)) : PATHS.micromambaRoot
   };
 };
@@ -81409,7 +81410,7 @@ var removeMicromambaRunShell = () => {
     return Promise.resolve();
   }
   core6.info("Removing micromamba run shell ...");
-  return fs5.rm(PATHS.micromambaRunShell);
+  return fs5.rm(options.micromambaRunShellPath);
 };
 var uninstallEnvironment = () => {
   return determineEnvironmentName(options.environmentName, options.environmentFile).then((environmentName) => {
diff --git a/package.json b/package.json
index e0b96a4..1b564e8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "setup-micromamba",
-  "version": "1.4.4",
+  "version": "1.5.0",
   "private": true,
   "description": "Action to setup micromamba",
   "scripts": {
diff --git a/src/main.ts b/src/main.ts
index 3e3651e..9b32944 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -22,6 +22,7 @@ const downloadMicromamba = (url: string) => {
     .mkdir(path.dirname(options.micromambaBinPath), { recursive: true })
     .then(() => downloadTool(url, options.micromambaBinPath))
     .then((_downloadPath) => fs.chmod(options.micromambaBinPath, 0o755))
+    .then(() => core.addPath(path.dirname(options.micromambaBinPath)))
     .then(() => core.info(`micromamba installed to ${options.micromambaBinPath}`))
     .catch((err) => {
       core.error(`Error installing micromamba: ${err.message}`)
@@ -135,9 +136,9 @@ $MAMBA_EXE run -r $MAMBA_ROOT_PREFIX -n $MAMBA_DEFAULT_ENV $1
         .replace(/\$MAMBA_EXE/g, options.micromambaBinPath)
         .replace(/\$MAMBA_ROOT_PREFIX/g, options.micromambaRootPath)
         .replace(/\$MAMBA_DEFAULT_ENV/g, environmentName)
-      core.debug(`Writing micromamba run shell to ${PATHS.micromambaRunShell}`)
+      core.debug(`Writing micromamba run shell to ${options.micromambaRunShellPath}`)
       core.debug(`File contents:\n"${file}"`)
-      return fs.writeFile(PATHS.micromambaRunShell, file, { encoding: 'utf8', mode: 0o755 })
+      return fs.writeFile(options.micromambaRunShellPath, file, { encoding: 'utf8', mode: 0o755 })
     })
     .finally(core.endGroup)
 }
diff --git a/src/options.ts b/src/options.ts
index 8416c93..8904e34 100644
--- a/src/options.ts
+++ b/src/options.ts
@@ -13,7 +13,6 @@ const core = process.env.MOCKING ? coreMocked : coreDefault
 export const PATHS = {
   micromambaBin: path.join(os.homedir(), 'micromamba-bin', `micromamba${os.platform() === 'win32' ? '.exe' : ''}`),
   micromambaRoot: path.join(os.homedir(), 'micromamba'),
-  micromambaRunShell: '/usr/local/bin/micromamba-shell',
   bashProfile: path.join(os.homedir(), '.bash_profile'),
   bashrc: path.join(os.homedir(), '.bashrc')
 }
@@ -55,6 +54,7 @@ export type Options = Readonly<{
   postCleanup: PostCleanupType
   micromambaRootPath: string
   micromambaBinPath: string
+  micromambaRunShellPath: string
 }>
 
 const postCleanupSchema = z.enum(['none', 'shell-init', 'environment', 'all'])
@@ -126,6 +126,9 @@ const inferOptions = (inputs: Inputs): Options => {
     : inputs.initShell.includes('none')
     ? []
     : (inputs.initShell as ShellType[])
+  const micromambaBinPath = inputs.micromambaBinPath
+    ? path.resolve(untildify(inputs.micromambaBinPath))
+    : PATHS.micromambaBin
 
   return {
     ...inputs,
@@ -144,9 +147,8 @@ const inferOptions = (inputs: Inputs): Options => {
     condarcFile: inputs.condarcFile
       ? path.resolve(untildify(inputs.condarcFile))
       : path.join(path.dirname(PATHS.micromambaBin), '.condarc'), // next to the micromamba binary -> easier cleanup
-    micromambaBinPath: inputs.micromambaBinPath
-      ? path.resolve(untildify(inputs.micromambaBinPath))
-      : PATHS.micromambaBin,
+    micromambaBinPath,
+    micromambaRunShellPath: path.join(path.dirname(micromambaBinPath), 'micromamba-shell'),
     micromambaRootPath: inputs.micromambaRootPath
       ? path.resolve(untildify(inputs.micromambaRootPath))
       : PATHS.micromambaRoot
diff --git a/src/post.ts b/src/post.ts
index c796e55..6a9f7e3 100644
--- a/src/post.ts
+++ b/src/post.ts
@@ -3,7 +3,7 @@ import * as os from 'os'
 import path from 'path'
 import * as coreDefault from '@actions/core'
 import { coreMocked } from './mocking'
-import { PATHS, options } from './options'
+import { options } from './options'
 import { determineEnvironmentName } from './util'
 import { shellDeinit } from './shell-init'
 import { saveCacheDownloads } from './cache'
@@ -15,7 +15,7 @@ const removeMicromambaRunShell = () => {
     return Promise.resolve()
   }
   core.info('Removing micromamba run shell ...')
-  return fs.rm(PATHS.micromambaRunShell)
+  return fs.rm(options.micromambaRunShellPath)
 }
 
 const uninstallEnvironment = () => {