diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bc6ba79..5cafd83 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,5 +1,10 @@
 name: Release to RubyGems.org
 
+on:
+  workflow_dispatch:
+
+concurrency: gem-release
+
 jobs:
   build:
     runs-on: ubuntu-latest