diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index be7acbf..cd692f9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -3,12 +3,6 @@ on:
   push:
     tags:
       - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
-  workflow_dispatch:
-    inputs:
-      koel_version:
-        description: 'Koel release tag to build against (e.g. v9.4.0). Required when triggered manually.'
-        required: true
-        type: string
 
 permissions: read-all
 
@@ -47,11 +41,8 @@ jobs:
 
       - name: Resolve version
         id: version
-        # env-var indirection to prevent template injection from the dispatch input
-        env:
-          KOEL_VERSION: ${{ inputs.koel_version }}
         run: |
-          REF="${KOEL_VERSION:-$GITHUB_REF_NAME}"
+          REF="$GITHUB_REF_NAME"
           echo "VERSION=${REF#v}" >> "$GITHUB_OUTPUT"
           echo "TAG=${REF}" >> "$GITHUB_OUTPUT"