diff --git a/.github/workflows/check-misskey-js-version.yml b/.github/workflows/check-misskey-js-version.yml
index 676585e97..137766f27 100644
--- a/.github/workflows/check-misskey-js-version.yml
+++ b/.github/workflows/check-misskey-js-version.yml
@@ -3,9 +3,7 @@ name: Check Misskey JS version
 on:
   push:
     branches:
-      - beta
-      - io
-      - host
+      - oscar
     paths:
       - packages/misskey-js/package.json
       - package.json
diff --git a/.github/workflows/dockle.yml b/.github/workflows/dockle.yml
index a1d34087b..070cc08ab 100644
--- a/.github/workflows/dockle.yml
+++ b/.github/workflows/dockle.yml
@@ -3,9 +3,7 @@ name: Dockle
 on:
   push:
     branches:
-      - beta
-      - io
-      - host
+      - oscar
   pull_request:
 
 jobs:
@@ -20,7 +18,7 @@ jobs:
           context: .
           push: false
           provenance: false
-          cache-from: type=registry,ref=ghcr.io/misskeyio/misskey:io-buildcache
+          cache-from: type=registry,ref=ghcr.io/swrei/misskey:oscar-buildcache
           tags: |
             misskey:scan
       - name: Run dockle
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
deleted file mode 100644
index 88e2aceae..000000000
--- a/.github/workflows/labeler.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-name: "Pull Request Labeler"
-on:
-  pull_request_target:
-    branches-ignore:
-      - 'l10n_develop'
-
-jobs:
-  triage:
-    permissions:
-      contents: read
-      pull-requests: write
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/labeler@v5
-      with:
-        repo-token: "${{ secrets.GITHUB_TOKEN }}"
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 48d05107a..2ba6cac88 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -3,9 +3,7 @@ name: Lint
 on:
   push:
     branches:
-      - beta
-      - io
-      - host
+      - oscar
     paths:
       - packages/backend/**
       - packages/frontend/**
diff --git a/.github/workflows/test-backend.yml b/.github/workflows/test-backend.yml
index e328b3c60..2de05ce2a 100644
--- a/.github/workflows/test-backend.yml
+++ b/.github/workflows/test-backend.yml
@@ -3,9 +3,7 @@ name: Test (backend)
 on:
   push:
     branches:
-      - beta
-      - io
-      - host
+      - oscar
     paths:
       - packages/backend/**
       # for permissions
diff --git a/.github/workflows/test-frontend.yml b/.github/workflows/test-frontend.yml
index f38e38387..6906e176c 100644
--- a/.github/workflows/test-frontend.yml
+++ b/.github/workflows/test-frontend.yml
@@ -3,9 +3,7 @@ name: Test (frontend)
 on:
   push:
     branches:
-      - beta
-      - io
-      - host
+      - oscar
     paths:
       - packages/frontend/**
       # for permissions
diff --git a/.github/workflows/test-misskey-js.yml b/.github/workflows/test-misskey-js.yml
index 85af292f9..68fbb76d9 100644
--- a/.github/workflows/test-misskey-js.yml
+++ b/.github/workflows/test-misskey-js.yml
@@ -6,9 +6,7 @@ name: Test (misskey.js)
 on:
   push:
     branches:
-      - beta
-      - io
-      - host
+      - oscar
     paths:
       - packages/misskey-js/**
   pull_request:
diff --git a/.github/workflows/test-production.yml b/.github/workflows/test-production.yml
index 184186a74..807362541 100644
--- a/.github/workflows/test-production.yml
+++ b/.github/workflows/test-production.yml
@@ -3,9 +3,7 @@ name: Test (production install and build)
 on:
   push:
     branches:
-      - beta
-      - io
-      - host
+      - oscar
   pull_request:
 
 env:
diff --git a/.github/workflows/validate-api-json.yml b/.github/workflows/validate-api-json.yml
index 80fe15f94..89fff6853 100644
--- a/.github/workflows/validate-api-json.yml
+++ b/.github/workflows/validate-api-json.yml
@@ -3,9 +3,7 @@ name: Test (backend)
 on:
   push:
     branches:
-      - beta
-      - io
-      - host
+      - oscar
     paths:
       - packages/backend/**
   pull_request: