diff --git a/.github/workflows/auto-author-assign.yml b/.github/workflows/auto-author-assign.yml
index de26b68..9b73d85 100644
--- a/.github/workflows/auto-author-assign.yml
+++ b/.github/workflows/auto-author-assign.yml
@@ -9,4 +9,4 @@ permissions:
 
 jobs:
   assign:
-    uses: smileidentity/central-workflows/.github/workflows/auto-author-assign.yml@v1
+    uses: smileidentity/central-workflows/.github/workflows/auto-author-assign.yml@e04941c6757ab31f0e5de5195a264530e8c373d0 # v1
diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index 226b3a8..2ecd8ae 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -2,7 +2,7 @@ name: Flag stale PRs
 
 on:
   schedule:
-    - cron: '30 16 * * *'
+    - cron: "30 16 * * *"
   workflow_dispatch:
 
 permissions:
@@ -11,4 +11,4 @@ permissions:
 
 jobs:
   stale:
-    uses: smileidentity/central-workflows/.github/workflows/stale.yml@v1
+    uses: smileidentity/central-workflows/.github/workflows/stale.yml@e04941c6757ab31f0e5de5195a264530e8c373d0 # v1