diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c1836ad..a4bad24 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   build:
-    uses: wetransform/gha-workflows/.github/workflows/dockerfile-build.yml@v2.1.0
+    uses: wetransform/gha-workflows/.github/workflows/dockerfile-build.yml@a78448bc4e8511a19e0362cfc0c450d76ca68b7f # v2.1.0
     with:
       image: wetransform/postfix
       tag: pr
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index a8a1b77..d256612 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   publish:
-    uses: wetransform/gha-workflows/.github/workflows/dockerfile-publish.yml@v2.1.0
+    uses: wetransform/gha-workflows/.github/workflows/dockerfile-publish.yml@a78448bc4e8511a19e0362cfc0c450d76ca68b7f # v2.1.0
     with:
       image: wetransform/postfix
       tag: latest