diff --git a/composer.json b/composer.json
index d28daa9c..d914f17e 100644
--- a/composer.json
+++ b/composer.json
@@ -52,6 +52,6 @@
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     "psr/cache": "^3.0.0",
     "phpstan/phpstan": "^1.0.1",
-    "phpunit/phpunit": "10.5.4"
+    "phpunit/phpunit": "10.5.5"
   }
 }
diff --git a/composer.lock b/composer.lock
index aefe6523..97254cfa 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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     ],
-    "content-hash": "f69afae112612c5289800ca3b841b0ea",
+    "content-hash": "502d9716027b0a9324ce095b77502880",
     "packages": [
         {
             "name": "macbre/monolog-utils",
@@ -1249,16 +1249,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "10.5.4",
+            "version": "10.5.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "f15372ecc42f14d64e2e6e2f07d22308c316b888"
+                "reference": "ed21115d505b4b4f7dc7b5651464e19a2c7f7856"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/f15372ecc42f14d64e2e6e2f07d22308c316b888",
-                "reference": "f15372ecc42f14d64e2e6e2f07d22308c316b888",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/ed21115d505b4b4f7dc7b5651464e19a2c7f7856",
+                "reference": "ed21115d505b4b4f7dc7b5651464e19a2c7f7856",
                 "shasum": ""
             },
             "require": {
@@ -1330,7 +1330,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/10.5.4"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/10.5.5"
             },
             "funding": [
                 {
@@ -1346,7 +1346,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-12-27T13:17:25+00:00"
+            "time": "2023-12-27T15:13:52+00:00"
         },
         {
             "name": "psr/cache",