diff --git a/.gitea/workflows/activate-server.yaml b/.gitea/workflows/activate-server.yaml
index ede5a65..09f5bb2 100644
--- a/.gitea/workflows/activate-server.yaml
+++ b/.gitea/workflows/activate-server.yaml
@@ -23,9 +23,9 @@ jobs:
       - uses: ko-build/setup-ko@v0.8
         with:
           version: v0.17.1
-      - name: Run GoReleaser
+      - name: Build
         env:
           KO_DOCKER_REPO: git.yoshino-s.xyz/${{ gitea.repository }}
         run: |
           cd activate
-          ko build --bare --sbom spdx --tags latest
\ No newline at end of file
+          ko build --bare --sbom spdx --tags latest ./cmd/server
\ No newline at end of file
diff --git a/activate/.ko.yaml b/activate/.ko.yaml
index c77d753..bbc8a2f 100644
--- a/activate/.ko.yaml
+++ b/activate/.ko.yaml
@@ -1,6 +1 @@
-baseImageOverrides:
-  safeline: alpine:3.20.3
-
-builds:
-  - id: ko-image
-    main: ./cmd/server
\ No newline at end of file
+defaultBaseImage: alpine:3.20.3
\ No newline at end of file