diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
index e27f3ea..b021d48 100644
--- a/.github/workflows/coding-standards.yml
+++ b/.github/workflows/coding-standards.yml
@@ -9,35 +9,9 @@ on:
     branches:
       - "*.x"
 
-env:
-  COMPOSER_ROOT_VERSION: "1.4"
-
 jobs:
   coding-standards:
     name: "Coding Standards"
-    runs-on: "ubuntu-20.04"
-
-    strategy:
-      matrix:
-        php-version:
-          - "7.4"
-
-    steps:
-      - name: "Checkout"
-        uses: "actions/checkout@v2"
-
-      - name: "Install PHP"
-        uses: "shivammathur/setup-php@v2"
-        with:
-          coverage: "none"
-          php-version: "${{ matrix.php-version }}"
-          tools: "cs2pr"
-
-      - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v1"
-        with:
-          dependency-versions: "highest"
-
-      # https://github.com/doctrine/.github/issues/3
-      - name: "Run PHP_CodeSniffer"
-        run: "vendor/bin/phpcs -q --no-colors --report=checkstyle | cs2pr"
+    uses: "doctrine/.github/.github/workflows/coding-standards.yml@1.2.0"
+    with:
+      composer-root-version: "1.4"
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 9ddb11e..7569e38 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -9,78 +9,10 @@ on:
     branches:
       - "*.x"
 
-env:
-  fail-fast: true
-  COMPOSER_ROOT_VERSION: "1.4"
-
 jobs:
   phpunit:
     name: "PHPUnit"
-    runs-on: "ubuntu-20.04"
-
-    strategy:
-      matrix:
-        php-version:
-          - "7.1"
-          - "7.2"
-          - "7.3"
-          - "7.4"
-          - "8.0"
-
-    steps:
-      - name: "Checkout"
-        uses: "actions/checkout@v2"
-        with:
-          fetch-depth: 2
-
-      - name: "Install PHP with XDebug"
-        uses: "shivammathur/setup-php@v2"
-        if: "${{ matrix.php-version == '7.1' }}"
-        with:
-          php-version: "${{ matrix.php-version }}"
-          coverage: "xdebug"
-          ini-values: "zend.assertions=1"
-
-      - name: "Install PHP with PCOV"
-        uses: "shivammathur/setup-php@v2"
-        if: "${{ matrix.php-version != '7.1' }}"
-        with:
-          php-version: "${{ matrix.php-version }}"
-          coverage: "pcov"
-          ini-values: "zend.assertions=1"
-
-      - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v1"
-        with:
-          dependency-versions: "highest"
-
-      - name: "Run PHPUnit"
-        run: "vendor/bin/phpunit --coverage-clover=coverage.xml"
-
-      - name: "Upload coverage file"
-        uses: "actions/upload-artifact@v2"
-        with:
-          name: "phpunit-${{ matrix.php-version }}.coverage"
-          path: "coverage.xml"
-
-  upload_coverage:
-    name: "Upload coverage to Codecov"
-    runs-on: "ubuntu-20.04"
-    needs:
-      - "phpunit"
-
-    steps:
-      - name: "Checkout"
-        uses: "actions/checkout@v2"
-        with:
-          fetch-depth: 2
-
-      - name: "Download coverage files"
-        uses: "actions/download-artifact@v2"
-        with:
-          path: "reports"
-
-      - name: "Upload to Codecov"
-        uses: "codecov/codecov-action@v1"
-        with:
-          directory: reports
+    uses: "doctrine/.github/.github/workflows/continuous-integration.yml@1.2.0"
+    with:
+      php-versions: '["7.1", "7.2", "7.3", "7.4", "8.0"]'
+      composer-root-version: "1.4"
diff --git a/.github/workflows/release-on-milestone-closed.yml b/.github/workflows/release-on-milestone-closed.yml
index b7a56f7..c97995f 100644
--- a/.github/workflows/release-on-milestone-closed.yml
+++ b/.github/workflows/release-on-milestone-closed.yml
@@ -8,38 +8,10 @@ on:
 jobs:
   release:
     name: "Git tag, release & create merge-up PR"
-    runs-on: "ubuntu-20.04"
-
-    steps:
-      - name: "Checkout"
-        uses: "actions/checkout@v2"
-
-      - name: "Release"
-        uses: "laminas/automatic-releases@v1"
-        with:
-          command-name: "laminas:automatic-releases:release"
-        env:
-          "GITHUB_TOKEN": ${{ secrets.GITHUB_TOKEN }}
-          "SIGNING_SECRET_KEY": ${{ secrets.SIGNING_SECRET_KEY }}
-          "GIT_AUTHOR_NAME": ${{ secrets.GIT_AUTHOR_NAME }}
-          "GIT_AUTHOR_EMAIL": ${{ secrets.GIT_AUTHOR_EMAIL }}
-
-      - name: "Create Merge-Up Pull Request"
-        uses: "laminas/automatic-releases@v1"
-        with:
-          command-name: "laminas:automatic-releases:create-merge-up-pull-request"
-        env:
-          "GITHUB_TOKEN": ${{ secrets.GITHUB_TOKEN }}
-          "SIGNING_SECRET_KEY": ${{ secrets.SIGNING_SECRET_KEY }}
-          "GIT_AUTHOR_NAME": ${{ secrets.GIT_AUTHOR_NAME }}
-          "GIT_AUTHOR_EMAIL": ${{ secrets.GIT_AUTHOR_EMAIL }}
-
-      - name: "Create new milestones"
-        uses: "laminas/automatic-releases@v1"
-        with:
-          command-name: "laminas:automatic-releases:create-milestones"
-        env:
-          "GITHUB_TOKEN": ${{ secrets.GITHUB_TOKEN }}
-          "SIGNING_SECRET_KEY": ${{ secrets.SIGNING_SECRET_KEY }}
-          "GIT_AUTHOR_NAME": ${{ secrets.GIT_AUTHOR_NAME }}
-          "GIT_AUTHOR_EMAIL": ${{ secrets.GIT_AUTHOR_EMAIL }}
+    uses: "doctrine/.github/.github/workflows/release-on-milestone-closed.yml@1.2.0"
+    secrets:
+      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      GIT_AUTHOR_EMAIL: ${{ secrets.GIT_AUTHOR_EMAIL }}
+      GIT_AUTHOR_NAME: ${{ secrets.GIT_AUTHOR_NAME }}
+      ORGANIZATION_ADMIN_TOKEN: ${{ secrets.ORGANIZATION_ADMIN_TOKEN }}
+      SIGNING_SECRET_KEY: ${{ secrets.SIGNING_SECRET_KEY }}
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index 0745e74..018dffd 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -9,34 +9,10 @@ on:
     branches:
       - "*.x"
 
-env:
-  COMPOSER_ROOT_VERSION: "1.4"
-
 jobs:
-  static-analysis-phpstan:
-    name: "Static Analysis with PHPStan"
-    runs-on: "ubuntu-20.04"
-
-    strategy:
-      matrix:
-        php-version:
-          - "7.4"
-
-    steps:
-      - name: "Checkout code"
-        uses: "actions/checkout@v2"
-
-      - name: "Install PHP"
-        uses: "shivammathur/setup-php@v2"
-        with:
-          coverage: "none"
-          php-version: "${{ matrix.php-version }}"
-          tools: "cs2pr"
-
-      - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v1"
-        with:
-          dependency-versions: "highest"
-
-      - name: "Run a static analysis with phpstan/phpstan"
-        run: "vendor/bin/phpstan analyse --error-format=checkstyle | cs2pr"
+  static-analysis:
+    name: "Static Analysis"
+    uses: "doctrine/.github/.github/workflows/static-analysis.yml@1.2.0"
+    with:
+      composer-root-version: "1.4"
+      php-version: "7.4"
diff --git a/composer.json b/composer.json
index 1ce3473..b46bd52 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,8 @@
         "phpbench/phpbench":         "^0.13 || 1.0.0-alpha2",
         "phpstan/phpstan":           "^0.12",
         "phpstan/phpstan-phpunit":   "^0.12",
-        "phpunit/phpunit":           "^7.0 || ^8.0 || ^9.0"
+        "phpunit/phpunit":           "^7.0 || ^8.0 || ^9.0",
+        "vimeo/psalm": "^4.11"
     },
     "autoload": {
         "psr-4": {
diff --git a/psalm.xml b/psalm.xml
new file mode 100644
index 0000000..7c0333d
--- /dev/null
+++ b/psalm.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<psalm
+    errorLevel="7"
+    resolveFromConfigFile="true"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+>
+    <projectFiles>
+        <directory name="src" />
+        <ignoreFiles>
+            <directory name="vendor" />
+        </ignoreFiles>
+    </projectFiles>
+</psalm>