diff --git a/composer.json b/composer.json
index 07b39903..53384a14 100644
--- a/composer.json
+++ b/composer.json
@@ -35,7 +35,7 @@
     "phpstan/phpstan-deprecation-rules": "~0.12.6",
     "phpstan/phpstan-phpunit": "~0.12.20",
     "phpstan/phpstan-strict-rules": "~0.12.9",
-    "phpunit/phpunit": "^8.5.17",
+    "phpunit/phpunit": "^8.5.18",
     "psalm/plugin-phpunit": "~0.16.1",
     "symfony/filesystem": "^5.3.0",
     "vimeo/psalm": "^4.8.1"
diff --git a/composer.lock b/composer.lock
index 0a81c9b1..6b8350af 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "2a24b4dfca11ce40e14636b48084154c",
+    "content-hash": "1e113601ea10cd7b5987a843310150ac",
     "packages": [
         {
             "name": "ergebnis/json-normalizer",
@@ -2800,16 +2800,16 @@
         },
         {
             "name": "phpunit/php-file-iterator",
-            "version": "2.0.3",
+            "version": "2.0.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-file-iterator.git",
-                "reference": "4b49fb70f067272b659ef0174ff9ca40fdaa6357"
+                "reference": "28af674ff175d0768a5a978e6de83f697d4a7f05"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-file-iterator/zipball/4b49fb70f067272b659ef0174ff9ca40fdaa6357",
-                "reference": "4b49fb70f067272b659ef0174ff9ca40fdaa6357",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-file-iterator/zipball/28af674ff175d0768a5a978e6de83f697d4a7f05",
+                "reference": "28af674ff175d0768a5a978e6de83f697d4a7f05",
                 "shasum": ""
             },
             "require": {
@@ -2848,7 +2848,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/php-file-iterator/issues",
-                "source": "https://github.com/sebastianbergmann/php-file-iterator/tree/2.0.3"
+                "source": "https://github.com/sebastianbergmann/php-file-iterator/tree/2.0.4"
             },
             "funding": [
                 {
@@ -2856,7 +2856,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-11-30T08:25:21+00:00"
+            "time": "2021-07-19T06:46:01+00:00"
         },
         {
             "name": "phpunit/php-text-template",
@@ -3024,16 +3024,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "8.5.17",
+            "version": "8.5.18",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "79067856d85421c56d413bd238d4e2cd6b0e54da"
+                "reference": "bd5fc77c869e8dd65040dacbad170f074c13796c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/79067856d85421c56d413bd238d4e2cd6b0e54da",
-                "reference": "79067856d85421c56d413bd238d4e2cd6b0e54da",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/bd5fc77c869e8dd65040dacbad170f074c13796c",
+                "reference": "bd5fc77c869e8dd65040dacbad170f074c13796c",
                 "shasum": ""
             },
             "require": {
@@ -3105,7 +3105,7 @@
             ],
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/8.5.17"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/8.5.18"
             },
             "funding": [
                 {
@@ -3117,7 +3117,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-06-23T05:12:43+00:00"
+            "time": "2021-07-19T06:13:17+00:00"
         },
         {
             "name": "psalm/plugin-phpunit",