diff --git a/.github/workflows/dev.yml b/.github/workflows/dev.yml
index 6a68aa8..37e75f4 100644
--- a/.github/workflows/dev.yml
+++ b/.github/workflows/dev.yml
@@ -14,7 +14,7 @@ jobs:
         - develop
         - releases/v0.21
     steps:
-    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+    - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633
 
     - name: Set up Spack
       uses: ./
diff --git a/action.yml b/action.yml
index ad425fa..d689a09 100644
--- a/action.yml
+++ b/action.yml
@@ -25,7 +25,7 @@ runs:
   using: "composite"
   steps:
   - name: Checkout Spack
-    uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+    uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633
     with:
       repository: spack/spack
       path: ${{ inputs.path }}