diff --git a/composer.json b/composer.json
index 06818449..b8197eb4 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
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     "phpstan/phpstan-strict-rules": "^1.5.2",
-    "phpunit/phpunit": "^10.5.8",
+    "phpunit/phpunit": "^10.5.9",
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     "rector/rector": "~0.19.2",
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diff --git a/composer.lock b/composer.lock
index 76525c55..fec790c5 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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     ],
-    "content-hash": "5cd19a2d0a3789b6f58cc80ed7b35db0",
+    "content-hash": "8b5b041628283addf60b8b7992719058",
     "packages": [],
     "packages-dev": [
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@@ -4048,16 +4048,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "10.5.8",
+            "version": "10.5.9",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "08f4fa74d5fbfff1ef22abffee47aaedcaea227e"
+                "reference": "0bd663704f0165c9e76fe4f06ffa6a1ca727fdbe"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/08f4fa74d5fbfff1ef22abffee47aaedcaea227e",
-                "reference": "08f4fa74d5fbfff1ef22abffee47aaedcaea227e",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/0bd663704f0165c9e76fe4f06ffa6a1ca727fdbe",
+                "reference": "0bd663704f0165c9e76fe4f06ffa6a1ca727fdbe",
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             },
             "require": {
@@ -4129,7 +4129,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/10.5.8"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/10.5.9"
             },
             "funding": [
                 {
@@ -4145,7 +4145,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-01-19T07:07:27+00:00"
+            "time": "2024-01-22T14:35:40+00:00"
         },
         {
             "name": "psalm/plugin-phpunit",