diff --git a/.github/workflows/publish-server.yml b/.github/workflows/publish-server.yml
index 6fcf11f5..3b2d588b 100644
--- a/.github/workflows/publish-server.yml
+++ b/.github/workflows/publish-server.yml
@@ -6,6 +6,7 @@ on:
         required: true
       prerelease:
         description: 'Is this a pre-release'
+        type: boolean
         required: true
         default: false