diff --git a/.github/workflows/container-build.yml b/.github/workflows/container-build.yml
index a47cc60c4..9b222c133 100644
--- a/.github/workflows/container-build.yml
+++ b/.github/workflows/container-build.yml
@@ -25,7 +25,7 @@ on:
         default: true
       CACHE_SUFFIX:
         required: false
-        type: boolean
+        type: string
         default: ""
     secrets:
       DOCKER_USERNAME: