diff --git a/.github/workflows/check_dist.yaml b/.github/workflows/check_dist.yaml
index c74b796..9598a7b 100644
--- a/.github/workflows/check_dist.yaml
+++ b/.github/workflows/check_dist.yaml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
         with:
           fetch-depth: 0   # needed so we can diff properly
 
diff --git a/.github/workflows/pr_toolkit.yml b/.github/workflows/pr_toolkit.yml
index 0a5a366..e3b6fa1 100644
--- a/.github/workflows/pr_toolkit.yml
+++ b/.github/workflows/pr_toolkit.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: clone local repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
 
       - name: run pull-request-toolkit action
         uses: ./