diff --git a/.github/workflows/isolated-tests.yml b/.github/workflows/isolated-tests.yml
index 5a8c26b0d..3662ec5ee 100644
--- a/.github/workflows/isolated-tests.yml
+++ b/.github/workflows/isolated-tests.yml
@@ -70,7 +70,7 @@ jobs:
         uses: supercharge/redis-github-action@1.8.1
 
       - name: Install PHPUnit
-        run: composer global require phpunit/phpunit:12.5.8
+        run: composer global require phpunit/phpunit:12.5.22
 
       - name: Setup problem matchers
         run: |
diff --git a/composer.json b/composer.json
index cd01adc93..2e7ec2047 100644
--- a/composer.json
+++ b/composer.json
@@ -78,7 +78,7 @@
         "phpat/phpat": "^0.11.0",
         "phpbench/phpbench": "^1.4",
         "phpstan/phpstan": "2.1.40",
-        "phpunit/phpunit": "^12.5.8",
+        "phpunit/phpunit": "^12.5.22",
         "predis/predis": "^3.0.0",
         "riskio/oauth2-auth0": "^2.4",
         "smolblog/oauth2-twitter": "^1.0",
diff --git a/packages/generation/composer.json b/packages/generation/composer.json
index ac4da40e6..6582c3ba4 100644
--- a/packages/generation/composer.json
+++ b/packages/generation/composer.json
@@ -24,6 +24,6 @@
     },
     "require-dev": {
         "spatie/phpunit-snapshot-assertions": "^5.1.8",
-        "phpunit/phpunit": "^12.5.8"
+        "phpunit/phpunit": "^12.5.22"
     }
 }
diff --git a/packages/http-client/composer.json b/packages/http-client/composer.json
index 074954237..89227ca40 100644
--- a/packages/http-client/composer.json
+++ b/packages/http-client/composer.json
@@ -14,7 +14,7 @@
     },
     "require-dev": {
         "guzzlehttp/psr7": "^2.6.1",
-        "phpunit/phpunit": "^12.5.8"
+        "phpunit/phpunit": "^12.5.22"
     },
     "autoload": {
         "psr-4": {