diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 55996bdf..d20ed0c8 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -129,6 +129,10 @@ jobs:
           echo "$TAG_MESSAGE" >> $GITHUB_OUTPUT
           echo "EOF" >> $GITHUB_OUTPUT
 
+      - name: Set lowercase owner for GHCR
+        id: lowercase
+        run: echo "owner=$(echo '${{ github.repository_owner }}' | tr '[:upper:]' '[:lower:]')" >> $GITHUB_OUTPUT
+
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v6
         with:
@@ -138,6 +142,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           TAG_MESSAGE: ${{ steps.tag_message.outputs.message }}
           GITHUB_REPO_OWNER: ${{ github.repository_owner }}
+          GITHUB_REPO_OWNER_LOWER: ${{ steps.lowercase.outputs.owner }}
           GITHUB_REPO_NAME: ${{ github.event.repository.name }}
           DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
 
diff --git a/.goreleaser.yaml b/.goreleaser.yaml
index 5b855724..c72f7422 100644
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -83,7 +83,7 @@ dockers:
     goos: linux
     goarch: amd64
     image_templates:
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-amd64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-amd64"
     dockerfile: Dockerfile.goreleaser
     use: buildx
     build_flag_templates:
@@ -96,7 +96,7 @@ dockers:
     goos: linux
     goarch: arm64
     image_templates:
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-arm64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-arm64"
     dockerfile: Dockerfile.goreleaser
     use: buildx
     build_flag_templates:
@@ -128,25 +128,25 @@ docker_manifests:
       - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-arm64"
 
   # GHCR manifests (owner must be lowercase)
-  - name_template: "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}"
+  - name_template: "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}"
     image_templates:
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-amd64"
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-arm64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-amd64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-arm64"
 
-  - name_template: "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:latest"
+  - name_template: "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:latest"
     image_templates:
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-amd64"
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-arm64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-amd64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-arm64"
 
-  - name_template: "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Major }}.{{ .Minor }}"
+  - name_template: "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Major }}.{{ .Minor }}"
     image_templates:
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-amd64"
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-arm64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-amd64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-arm64"
 
-  - name_template: "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Major }}"
+  - name_template: "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Major }}"
     image_templates:
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-amd64"
-      - "ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}-arm64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-amd64"
+      - "ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}-arm64"
 
 release:
   github:
@@ -173,7 +173,7 @@ release:
     docker pull {{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}
 
     # GitHub Container Registry
-    docker pull ghcr.io/{{ lower .Env.GITHUB_REPO_OWNER }}/sub2api:{{ .Version }}
+    docker pull ghcr.io/{{ .Env.GITHUB_REPO_OWNER_LOWER }}/sub2api:{{ .Version }}
     ```
 
     **One-line install (Linux):**