diff --git a/.github/workflows/code_analysis.yaml b/.github/workflows/code_analysis.yaml
index 6c1a966..04d7d95 100644
--- a/.github/workflows/code_analysis.yaml
+++ b/.github/workflows/code_analysis.yaml
@@ -9,7 +9,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['7.3', '7.4', '8.0', '8.1']
+        php:
+        #  - '7.1' # incompatible tester
+          - '7.2'
+          - '7.3'
+          - '7.4'
+          - '8.0'
+        #  - '8.1' # not yet compatible (PHP 8.1 RC2)
         actions:
           - name: PHPStan
             run: composer phpstan
@@ -45,8 +51,6 @@ jobs:
             ${{ steps.composer-cache.outputs.dir }}
             **/composer.lock
           key: ${{ runner.os }}-${{ matrix.php }}-composer-${{ hashFiles('**/composer.json') }}
-          restore-keys: |
-            ${{ runner.os }}-${{ matrix.php }}-composer-
 
 
       - name: Install Composer
diff --git a/composer.json b/composer.json
index 57222af..728c001 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
         "nette/utils": "^3.0"
     },
     "require-dev": {
-        "phpstan/phpstan": "^0.12.83",
+        "phpstan/phpstan": "^0.12.98",
         "nette/tester": "^2.4"
     },
     "autoload": {