diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
index b8cf09dd..e4f16d76 100644
--- a/.github/workflows/shellcheck.yml
+++ b/.github/workflows/shellcheck.yml
@@ -10,7 +10,7 @@ jobs:
     name: Shellcheck
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@7884fcad6b5d53d10323aee724dc68d8b9096a2e # tag=v2
     - name: Run ShellCheck
       uses: ludeeus/action-shellcheck@master
       with:
@@ -21,6 +21,6 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v3
-    - uses: pre-commit/action@v3.0.0
+    - uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b # tag=v3
+    - uses: actions/setup-python@98f2ad02fd48d057ee3b4d4f66525b231c3e52b6 # tag=v3
+    - uses: pre-commit/action@646c83fcd040023954eafda54b4db0192ce70507 # tag=v3.0.0