diff --git a/.github/workflows/release-alpha.yml b/.github/workflows/release-alpha.yml
index 5eb668114..a53d48e17 100644
--- a/.github/workflows/release-alpha.yml
+++ b/.github/workflows/release-alpha.yml
@@ -1,5 +1,11 @@
 name: Release alpha version on demand
-on: [workflow_dispatch]
+on:
+  workflow_dispatch:
+    inputs:
+      branch:
+        description: 'Branch to release from'
+        required: true
+        default: 'main'
 jobs:
   release-alpha:
     runs-on: ubuntu-latest