diff --git a/.github/workflows/ci-cd-pims-dev.yml b/.github/workflows/ci-cd-pims-dev.yml
index c984be4197..8799010d81 100644
--- a/.github/workflows/ci-cd-pims-dev.yml
+++ b/.github/workflows/ci-cd-pims-dev.yml
@@ -89,7 +89,7 @@ jobs:
     outputs:
       deps_changed: ${{ steps.changed.outputs.any_changed }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
       - name: Check dependency-related file changes
         id: changed
         uses: tj-actions/changed-files@22103cc46bda19c2b464ffe86db46df6922fd323 #v47.0.5