diff --git a/.gitattributes b/.gitattributes
index 4a70804..d3c4ec8 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -13,4 +13,5 @@
 .gitignore export-ignore
 .styleci.yml export-ignore
 CHANGELOG.md export-ignore
+phpstan.neon.dist export-ignore
 phpunit.xml.dist export-ignore
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
new file mode 100644
index 0000000..453d8a6
--- /dev/null
+++ b/.github/workflows/static-analysis.yml
@@ -0,0 +1,41 @@
+name: static analysis
+
+on:
+  push:
+    branches:
+      - master
+      - '*.x'
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  tests:
+    runs-on: ubuntu-22.04
+
+    strategy:
+      fail-fast: true
+
+    name: Static Analysis
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.2
+          tools: composer:v2
+          coverage: none
+
+      - name: Install dependencies
+        uses: nick-fields/retry@v2
+        with:
+          timeout_minutes: 5
+          max_attempts: 5
+          command: composer update --prefer-stable --prefer-dist --no-interaction --no-progress
+
+      - name: Execute type checking
+        run: vendor/bin/phpstan
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f55b38b..a3959e2 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [7.1, 7.2, 7.3, 7.4, '8.0', 8.1, 8.2]
+        php: [7.2, 7.3, 7.4, '8.0', 8.1, 8.2]
 
     name: PHP ${{ matrix.php }}
 
diff --git a/composer.json b/composer.json
index 6236217..3d14110 100644
--- a/composer.json
+++ b/composer.json
@@ -14,10 +14,11 @@
         }
     ],
     "require": {
-        "php": "^7.1.3|^8.0",
+        "php": "^7.2.0|^8.0",
         "illuminate/support": "~5.8.0|^6.0|^7.0|^8.0|^9.0|^10.0"
     },
     "require-dev": {
+        "phpstan/phpstan": "^1.10",
         "phpunit/phpunit": "^7.0|^8.0|^9.0"
     },
     "autoload": {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
new file mode 100644
index 0000000..5b79b49
--- /dev/null
+++ b/phpstan.neon.dist
@@ -0,0 +1,5 @@
+parameters:
+  paths:
+    - src
+
+  level: 0