diff --git a/stacks/pinot-noir/concretizer.yaml b/stacks/pinot-noir/concretizer.yaml
index 8a78f3a98d44d12ca684874c2dc6a750bb3f29cc..27001ed32b989dbcad506b7606ca8e9dd55ebd4a 100644
--- a/stacks/pinot-noir/concretizer.yaml
+++ b/stacks/pinot-noir/concretizer.yaml
@@ -2,7 +2,7 @@ concretizer:
   reuse:
     roots: true
     include:
-      '%gcc@11.4.1'
+      - '%gcc@11.4.1'
 
   unify: false
   duplicates: