diff --git a/.github/actions/dependencies/action.yml b/.github/actions/dependencies/action.yml
index 7c5f23571ad..4a42c13c287 100644
--- a/.github/actions/dependencies/action.yml
+++ b/.github/actions/dependencies/action.yml
@@ -13,7 +13,7 @@ inputs:
   spack_version:
     description: 'Version of Spack to use'
     required: false
-    default: 'develop-2024-12-15'
+    default: 'develop-acts'
 
 runs:
   using: 'composite'