diff --git a/.github/ISSUE_TEMPLATE/Bug.yaml b/.github/ISSUE_TEMPLATE/Bug.yaml
index 39088a600..3adc5d4ed 100644
--- a/.github/ISSUE_TEMPLATE/Bug.yaml
+++ b/.github/ISSUE_TEMPLATE/Bug.yaml
@@ -13,7 +13,6 @@ body:
 
         Please consider supporting our collective:
         👉  https://opencollective.com/wemake-python-styleguide/donate
-
   - type: textarea
     attributes:
       label: "What's wrong"
@@ -26,7 +25,6 @@ body:
       description: "Please, explain how do you expect it to be"
     validations:
       required: True
-
   - type: textarea
     attributes:
       label: "Flake8 version and plugins"
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 909a6a923..3286debbf 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,20 +1,20 @@
 version: 2
 updates:
-- package-ecosystem: pip
-  directory: "/"
-  schedule:
-    interval: daily
-    time: "02:00"
-  open-pull-requests-limit: 10
-- package-ecosystem: github-actions
-  directory: "/"
-  schedule:
-    interval: daily
-    time: "02:00"
-  open-pull-requests-limit: 10
-- package-ecosystem: docker
-  directory: "/"
-  schedule:
-    interval: daily
-    time: "02:00"
-  open-pull-requests-limit: 10
+  - package-ecosystem: pip
+    directory: "/"
+    schedule:
+      interval: daily
+      time: "02:00"
+    open-pull-requests-limit: 10
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: daily
+      time: "02:00"
+    open-pull-requests-limit: 10
+  - package-ecosystem: docker
+    directory: "/"
+    schedule:
+      interval: daily
+      time: "02:00"
+    open-pull-requests-limit: 10
diff --git a/.github/workflows/depup.yml b/.github/workflows/depup.yml
index b7c87a01e..d0e0545d1 100644
--- a/.github/workflows/depup.yml
+++ b/.github/workflows/depup.yml
@@ -1,18 +1,14 @@
 name: depup
-
 'on':
   workflow_dispatch:
   schedule:
     - cron: '30 7 * * *'
-
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
-
 permissions:
   contents: write
   pull-requests: write
-
 jobs:
   reviewdog:
     runs-on: ubuntu-latest
@@ -24,7 +20,6 @@ jobs:
           file: Dockerfile
           version_name: REVIEWDOG_VERSION
           repo: reviewdog/reviewdog
-
       - name: Create Pull Request to update reviewdog
         uses: peter-evans/create-pull-request@v7
         with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f4fbb2380..565308c89 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,19 +1,15 @@
 name: test
-
 'on':
   push:
     branches:
       - master
   pull_request:
   workflow_dispatch:
-
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
-
 permissions:
   contents: read
-
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -21,32 +17,27 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.10', '3.11', '3.12', '3.13']
-
     steps:
-    - uses: actions/checkout@v4
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
-      with:
-        python-version: ${{ matrix.python-version }}
-
-    - name: Install poetry
-      run: |
-        curl -sSL "https://install.python-poetry.org" | python
-
-        # Adding `poetry` to `$PATH`:
-        echo "$HOME/.poetry/bin" >> $GITHUB_PATH
-
-    - name: Install dependencies
-      run: |
-        poetry config virtualenvs.in-project true
-        poetry run pip install -U pip
-        poetry install
-
-    - name: Run tests
-      run: make test
-
-    - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v5
-      with:
-        files: ./coverage.xml
-        token: ${{ secrets.CODECOV_TOKEN }}
+      - uses: actions/checkout@v4
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install poetry
+        run: |
+          curl -sSL "https://install.python-poetry.org" | python
+
+          # Adding `poetry` to `$PATH`:
+          echo "$HOME/.poetry/bin" >> $GITHUB_PATH
+      - name: Install dependencies
+        run: |
+          poetry config virtualenvs.in-project true
+          poetry run pip install -U pip
+          poetry install
+      - name: Run tests
+        run: make test
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          files: ./coverage.xml
+          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/wps.yml b/.github/workflows/wps.yml
index 641dbec09..a396a3f7e 100644
--- a/.github/workflows/wps.yml
+++ b/.github/workflows/wps.yml
@@ -1,26 +1,22 @@
 name: wps
-
 'on':
   pull_request:
     branches:
       - master
-
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
-
 permissions:
   contents: read
   pull-requests: write
-
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-    - uses: wemake-services/wemake-python-styleguide@master
-      with:
-        reporter: 'github-pr-review'
-        fail_workflow: false
-      env:
-        GITHUB_TOKEN: ${{ secrets.github_token }}
+      - uses: actions/checkout@v4
+      - uses: wemake-services/wemake-python-styleguide@master
+        with:
+          reporter: 'github-pr-review'
+          fail_workflow: false
+        env:
+          GITHUB_TOKEN: ${{ secrets.github_token }}
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0cc22fe38..37e264664 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -10,6 +10,10 @@ repos:
       - id: mixed-line-ending
         args: [--fix=lf]
       - id: check-case-conflict
+  - repo: https://github.com/google/yamlfmt
+    rev: v0.14.0
+    hooks:
+      - id: yamlfmt
   - repo: https://github.com/python-jsonschema/check-jsonschema
     rev: 0.30.0
     hooks:
@@ -19,6 +23,10 @@ repos:
     rev: v1.7.4
     hooks:
       - id: actionlint
+  - repo: https://github.com/shellcheck-py/shellcheck-py
+    rev: v0.10.0.1
+    hooks:
+      - id: shellcheck
   - repo: https://github.com/tox-dev/pyproject-fmt
     rev: v2.5.0
     hooks:
@@ -29,9 +37,7 @@ repos:
       - id: ruff
         args: ["--exit-non-zero-on-fix", "--fix"]
       - id: ruff-format
-
 exclude: ^(tests/fixtures/|tests/test_formatter/__snapshots__/)
-
 ci:
   autofix_commit_msg: "[pre-commit.ci] auto fixes from pre-commit.com hooks"
   autofix_prs: true
diff --git a/.readthedocs.yml b/.readthedocs.yml
index b244297a0..8e86cca59 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,5 +1,4 @@
 version: 2
-
 build:
   os: ubuntu-lts-latest
   tools: {python: "3.12"}
@@ -11,11 +10,9 @@ build:
       - poetry config virtualenvs.create false
       - poetry self add poetry-plugin-export
       - poetry export --only main --only docs --format=requirements.txt --output=requirements.txt
-
 python:
   install:
     - requirements: requirements.txt
-
 sphinx:
   configuration: 'docs/conf.py'
   # TODO: fix warnings and enable
diff --git a/action.yml b/action.yml
index c2b2cb12f..be5aecc65 100644
--- a/action.yml
+++ b/action.yml
@@ -9,7 +9,6 @@ description: 'Runs wemake-python-styleguide as a GitHub Action'
 branding:
   icon: 'check'
   color: 'green'
-
 inputs:
   path:
     description: 'Path or space-separated list of paths to lint'
@@ -34,7 +33,6 @@ inputs:
 outputs:
   output:
     description: 'The output of wemake-python-styleguide run'
-
 runs:
   using: 'docker'
   image: 'Dockerfile'
diff --git a/scripts/entrypoint.sh b/scripts/entrypoint.sh
index 41b7ab00c..4de7a6bcc 100755
--- a/scripts/entrypoint.sh
+++ b/scripts/entrypoint.sh
@@ -26,7 +26,7 @@ flake8 --version
 echo '================================='
 echo
 
-cd "$INPUT_CWD"
+cd "$INPUT_CWD" || exit 1
 
 # Runs `flake8`, possibly with `reviewdog`:
 if [ "$INPUT_REPORTER" == 'terminal' ]; then
@@ -42,6 +42,7 @@ elif [ "$INPUT_REPORTER" == 'github-pr-review' ] ||
   output=$(flake8 "$INPUT_PATH" --append-config='/action-config.cfg')
   echo "$output" | reviewdog -f=flake8 -reporter="$INPUT_REPORTER" -level=error
   # `reviewdog` does not fail with any status code, so we have to get dirty:
+  # shellcheck disable=SC2319
   status=$(test "$output" = ''; echo $?)
 else
   output="Invalid action reporter specified: $INPUT_REPORTER"
@@ -52,6 +53,7 @@ fi
 # See: https://help.github.com/en/articles/development-tools-for-github-action
 delimiter="$(dd if=/dev/urandom bs=15 count=1 status=none | base64)"
 # See: https://github.com/orgs/community/discussions/26288#discussioncomment-3876281
+# shellcheck disable=SC2129
 echo "output<<$delimiter" >> "$GITHUB_OUTPUT"
 echo "$output" >> "$GITHUB_OUTPUT"
 echo "$delimiter" >> "$GITHUB_OUTPUT"