diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bdbb9a8..1af558d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: clone
-      uses: actions/checkout@v3
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
 
     - name: install go
       uses: actions/setup-go@v4
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 69b1f3c..b23808e 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
diff --git a/.github/workflows/prerelease.yml b/.github/workflows/prerelease.yml
index 21f0e63..34f6dfb 100644
--- a/.github/workflows/prerelease.yml
+++ b/.github/workflows/prerelease.yml
@@ -14,7 +14,7 @@ jobs:
 
     steps:
     - name: clone
-      uses: actions/checkout@v3
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
       with:
         # ensures we fetch tag history for the repository
         fetch-depth: 0
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 1dc0a4e..44207a1 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: clone
-      uses: actions/checkout@v3
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
       with:
         # ensures we fetch tag history for the repository
         fetch-depth: 0
diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index 0a0027c..1f464e4 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
     - name: clone
-      uses: actions/checkout@v3
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
 
     - name: install go
       uses: actions/setup-go@v4
@@ -36,7 +36,7 @@ jobs:
 
     steps:
     - name: clone
-      uses: actions/checkout@v3
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
 
     - name: install go
       uses: actions/setup-go@v4
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f3cf034..bd8414c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: clone
-      uses: actions/checkout@v3
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
 
     - name: install go
       uses: actions/setup-go@v4
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index aaa32bf..b28fc28 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
     - name: clone
-      uses: actions/checkout@v3
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
 
     - name: install go
       uses: actions/setup-go@v4