diff --git a/.github/workflows/matrix-and-codecov-on-merge-to-main.yml b/.github/workflows/matrix-and-codecov-on-merge-to-main.yml
index c1905e0..743193f 100644
--- a/.github/workflows/matrix-and-codecov-on-merge-to-main.yml
+++ b/.github/workflows/matrix-and-codecov-on-merge-to-main.yml
@@ -8,7 +8,7 @@ on:
     types:
       - prereleased
       - published
-  workflow_dispatch: null
+  workflow_dispatch:
 
 jobs:
   coverage: