diff --git a/README.md b/README.md
index 1b6bbfb..be4104f 100644
--- a/README.md
+++ b/README.md
@@ -13,9 +13,9 @@ This action currently supports GitHub-provided Linux, macOS and Windows runners
 Add the following entry to your Github workflow YAML file:
 
 ```yaml
-uses: sigstore/cosign-installer@v3.7.0
+uses: sigstore/cosign-installer@v3.8.0
 with:
-  cosign-release: 'v2.4.1' # optional
+  cosign-release: 'v2.4.2' # optional
 ```
 
 Example using a pinned version:
@@ -30,9 +30,9 @@ jobs:
     name: Install Cosign
     steps:
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3.7.0
+        uses: sigstore/cosign-installer@v3.8.0
         with:
-          cosign-release: 'v2.4.1'
+          cosign-release: 'v2.4.2'
       - name: Check install!
         run: cosign version
 ```
@@ -49,7 +49,7 @@ jobs:
     name: Install Cosign
     steps:
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3.7.0
+        uses: sigstore/cosign-installer@v3.8.0
       - name: Check install!
         run: cosign version
 ```
@@ -70,10 +70,10 @@ jobs:
       - name: Install go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.21'
+          go-version: '1.23'
           check-latest: true
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3.7.0
+        uses: sigstore/cosign-installer@v3.8.0
         with:
           cosign-release: main
       - name: Check install!
@@ -105,7 +105,7 @@ jobs:
           fetch-depth: 1
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3.7.0
+        uses: sigstore/cosign-installer@v3.8.0
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2.1.0
diff --git a/action.yml b/action.yml
index 4a7fa59..99be681 100644
--- a/action.yml
+++ b/action.yml
@@ -10,7 +10,7 @@ inputs:
   cosign-release:
     description: 'cosign release version to be installed'
     required: false
-    default: 'v2.4.1'
+    default: 'v2.4.2'
   install-dir:
     description: 'Where to install the cosign binary'
     required: false
@@ -65,13 +65,13 @@ runs:
           esac
         }
 
-        bootstrap_version='v2.4.1'
-        bootstrap_linux_amd64_sha='8b24b946dd5809c6bd93de08033bcf6bc0ed7d336b7785787c080f574b89249b'
-        bootstrap_linux_arm_sha='541fd175fae792a154fa2fa025146e3d4691e2dd97717fa9ace35677a88489e7'
-        bootstrap_linux_arm64_sha='3b2e2e3854d0356c45fe6607047526ccd04742d20bd44afb5be91fa2a6e7cb4a'
-        bootstrap_darwin_amd64_sha='666032ca283da92b6f7953965688fd51200fdc891a86c19e05c98b898ea0af4e'
-        bootstrap_darwin_arm64_sha='13343856b69f70388c4fe0b986a31dde5958e444b41be22d785d3dc5e1a9cc62'
-        bootstrap_windows_amd64_sha='8d57f8a42a981d27290c4227271fa9f0f62ca6630eb4a21d316bd6b01405b87c'
+        bootstrap_version='v2.4.2'
+        bootstrap_linux_amd64_sha='e7f5bd99a790703333e8f8e8e6c91d5e646f3d7041e4cf935b56587de20cec3f'
+        bootstrap_linux_arm_sha='c626df51f614085322ce66bc1c06f159d6b17669113013f0014bda8c34c741f5'
+        bootstrap_linux_arm64_sha='9ab2a932190161d67b9fcda81777e28086b2152c7d506a0e2f83dbb3fd7e2b1c'
+        bootstrap_darwin_amd64_sha='2697aba2d9ea5159b8f209025cfc392a8a25ce177c8d3b0e07afd4e1db3b163c'
+        bootstrap_darwin_arm64_sha='f9a574c1ab208918a0d96ffca7a105dfb32792f6c33e0da2dbefb76e25600ab8'
+        bootstrap_windows_amd64_sha='996e6b5e0ca712c3a2c0e182aee957b85df1eba69babaae8a6349c0bce0088db'
         cosign_executable_name=cosign
 
         trap "popd >/dev/null" EXIT