diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index f02bcd6..aabe082 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -8,7 +8,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3
       with:
         fetch-depth: 2
 
diff --git a/.github/workflows/linter.yml b/.github/workflows/linter.yml
index c2f8cb6..1538bc0 100644
--- a/.github/workflows/linter.yml
+++ b/.github/workflows/linter.yml
@@ -8,7 +8,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@a37ce9120846195fa4ece8f58b268e6043cb2f26 # v3
       with:
         fetch-depth: 2