diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 481424c2..4e166608 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,6 @@ on:
           to test against under CPython.
         required: true
         type: string
-  workflow_dispatch:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}