diff --git a/.github/workflows/ci-tag.yml b/.github/workflows/ci-tag.yml
index 21833316..d14900e8 100644
--- a/.github/workflows/ci-tag.yml
+++ b/.github/workflows/ci-tag.yml
@@ -2,7 +2,7 @@ on:
   push:
     tags:
       - '[0-9]+.[0-9]+.[0-9]+'
-      - '[0-9]+.[0-9]+.[0-9]+-rc[0-9]+'
+      - '[0-9]+.[0-9]+.[0-9]+-rc.[0-9]+'
 
 name: ci-tag
 
@@ -77,5 +77,6 @@ jobs:
           file: RELEASE.md
           asset_name: RELEASE.md
           tag: ${{ github.ref }}
+          prerelease: ${{ contains(github.ref_name, '-rc') }}
           body: |
             ${{ steps.read_release.outputs.RELEASE_BODY }}