diff --git a/.github/workflows/check_install.yml b/.github/workflows/check_install.yml
index e8f6ff4..e621db6 100644
--- a/.github/workflows/check_install.yml
+++ b/.github/workflows/check_install.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v6
+      uses: actions/checkout@v6.0.2
       with:
         fetch-depth: 1
 
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index b05a233..013fa7c 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v6
+      uses: actions/checkout@v6.0.2
       with:
         fetch-depth: 0
     - name: Set up Python
@@ -69,7 +69,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v6
+      uses: actions/checkout@v6.0.2
       with:
         fetch-depth: 0
     - name: Set up Python
diff --git a/.github/workflows/mint-release.yml b/.github/workflows/mint-release.yml
index 13cc6e6..d6fc3fe 100644
--- a/.github/workflows/mint-release.yml
+++ b/.github/workflows/mint-release.yml
@@ -16,7 +16,7 @@ jobs:
     steps:
 
     - name: Checkout code
-      uses: actions/checkout@v6
+      uses: actions/checkout@v6.0.2
       with:
         fetch-depth: 0
 
diff --git a/.github/workflows/publish-to-pypi.yml b/.github/workflows/publish-to-pypi.yml
index 3bcd929..c82f719 100644
--- a/.github/workflows/publish-to-pypi.yml
+++ b/.github/workflows/publish-to-pypi.yml
@@ -22,7 +22,7 @@ jobs:
     steps:
 
     - name: Checkout code
-      uses: actions/checkout@v6
+      uses: actions/checkout@v6.0.2
 
     - name: Set up Python
       uses: actions/setup-python@v6