diff --git a/.github/prepare-docker-image/action.yml b/.github/prepare-docker-image/action.yml
index 86c129b2..53c709a3 100644
--- a/.github/prepare-docker-image/action.yml
+++ b/.github/prepare-docker-image/action.yml
@@ -5,10 +5,10 @@ runs:
   using: composite
   steps:
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v2
+      uses: docker/setup-buildx-action@v3
 
     - name: Build
-      uses: docker/build-push-action@v3
+      uses: docker/build-push-action@v5
       with:
         cache-from: type=gha
         load: true
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index fd2d6450..e4920328 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -1,6 +1,6 @@
 name: Checks
 
-on:
+on: # yamllint disable-line rule:truthy
   push:
     branches:
       - master
@@ -17,10 +17,10 @@ jobs:
 
     steps:
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       - name: Build
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v5
         with:
           cache-from: type=gha
           cache-to: type=gha,mode=max
@@ -47,7 +47,7 @@ jobs:
           --health-retries 5
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/prepare-docker-image
 
       - name: Create DB
@@ -61,8 +61,21 @@ jobs:
     needs: docker-build
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/prepare-docker-image
 
       - name: Run Rubocop
         run: $DOCKER_RUN bundle exec rubocop --format github
+
+  yamllint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+
+      - run: >
+          pip install yamllint==1.32.0 &&
+          yamllint -c .github/yamllint.yml -s .
diff --git a/.github/yamllint.yml b/.github/yamllint.yml
new file mode 100644
index 00000000..d5c44807
--- /dev/null
+++ b/.github/yamllint.yml
@@ -0,0 +1,17 @@
+extends: default
+
+ignore: |
+  pnpm-lock.yaml
+
+rules:
+  document-start: disable
+  line-length: disable
+  quoted-strings:
+    quote-type: double
+    required: only-when-needed
+  comments:
+    min-spaces-from-content: 1
+  empty-lines:
+    max: 1
+  indentation:
+    spaces: 2
diff --git a/.rubocop.yml b/.rubocop.yml
index 7b0f8710..11790d85 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -43,14 +43,14 @@ Metrics/AbcSize:
 
 Metrics/BlockLength:
   AllowedMethods:
-    - "class_methods"
-    - "concerning"
-    - "describe"
-    - "define"
-    - "FactoryBot.define"
+    - class_methods
+    - concerning
+    - describe
+    - define
+    - FactoryBot.define
   Exclude:
-    - "config/routes.rb"
-    - "test/factories/web/**/*"
+    - config/routes.rb
+    - test/factories/web/**/*
 
 Metrics/ClassLength:
   Enabled: false
diff --git a/config/reverser.yml b/config/reverser.yml
index 155257fb..45bfe247 100644
--- a/config/reverser.yml
+++ b/config/reverser.yml
@@ -1,12 +1,12 @@
 # Provide a overwrite file with REVERSER_CUSTOM_CONFIG_PATH
-app_name: "Reverser"
+app_name: Reverser
 # How large should the generated thumbnails be
 # This is a bounding box
 thumbnail_size: 300
 # The server which handles similar images search
 # Must respond like https://github.com/danbooru/iqdb
-iqdb_server: "http://iqdb:5588"
-selenium_url: "http://selenium:4444"
+iqdb_server: http://iqdb:5588
+selenium_url: http://selenium:4444
 
 # Only overwriteable through env
 custom_config_path: config/reverser_custom_config.yml
diff --git a/docker-compose.yml b/docker-compose.yml
index 43d9c504..4ffc10d1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -50,7 +50,7 @@ services:
       - 5432:5432
 
   iqdb:
-    image: ghcr.io/e621ng/iqdb:d4fed9d9a51184e72d2f14d4ec461d7830bd177a 
+    image: ghcr.io/e621ng/iqdb:d4fed9d9a51184e72d2f14d4ec461d7830bd177a
     volumes:
       - ${REVERSER_DATA_PATH}/iqdb_data:/iqdb