diff --git a/.gitea/workflows/activate-server.yaml b/.gitea/workflows/activate-server.yaml
index 4e329b6..ede5a65 100644
--- a/.gitea/workflows/activate-server.yaml
+++ b/.gitea/workflows/activate-server.yaml
@@ -22,7 +22,7 @@ jobs:
           go-version: stable
       - uses: ko-build/setup-ko@v0.8
         with:
-          version: latest-release
+          version: v0.17.1
       - name: Run GoReleaser
         env:
           KO_DOCKER_REPO: git.yoshino-s.xyz/${{ gitea.repository }}