diff --git a/.github/workflows/build_latest.yml b/.github/workflows/build_latest.yml
index 75430ac..b9f0fad 100644
--- a/.github/workflows/build_latest.yml
+++ b/.github/workflows/build_latest.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Set up QEMU environment
         uses: docker/setup-qemu-action@v1
diff --git a/.github/workflows/build_tags.yml b/.github/workflows/build_tags.yml
index 0981f4a..14e6e59 100644
--- a/.github/workflows/build_tags.yml
+++ b/.github/workflows/build_tags.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Extract version numbers from GitHub reference
         id: tagger