diff --git a/composer.json b/composer.json
index e4eb66c..d8ced0e 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
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     "phpstan/phpstan-strict-rules": "~0.12.9",
-    "phpunit/phpunit": "~9.5.2",
+    "phpunit/phpunit": "~9.5.3",
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diff --git a/composer.lock b/composer.lock
index d454060..99a5ba0 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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-    "content-hash": "5539b90c7390fd7a509e72a19a754764",
+    "content-hash": "2d91b259d895510ed8a1a2de149b7b3a",
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@@ -2968,16 +2968,16 @@
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-            "version": "3.0.4",
+            "version": "3.1.0",
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                 "url": "https://github.com/phar-io/version.git",
-                "reference": "e4782611070e50613683d2b9a57730e9a3ba5451"
+                "reference": "bae7c545bef187884426f042434e561ab1ddb182"
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-                "url": "https://api.github.com/repos/phar-io/version/zipball/e4782611070e50613683d2b9a57730e9a3ba5451",
-                "reference": "e4782611070e50613683d2b9a57730e9a3ba5451",
+                "url": "https://api.github.com/repos/phar-io/version/zipball/bae7c545bef187884426f042434e561ab1ddb182",
+                "reference": "bae7c545bef187884426f042434e561ab1ddb182",
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             "require": {
@@ -3013,9 +3013,9 @@
             "description": "Library for handling version information and constraints",
             "support": {
                 "issues": "https://github.com/phar-io/version/issues",
-                "source": "https://github.com/phar-io/version/tree/3.0.4"
+                "source": "https://github.com/phar-io/version/tree/3.1.0"
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-            "time": "2020-12-13T23:18:30+00:00"
+            "time": "2021-02-23T14:00:09+00:00"
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@@ -3232,16 +3232,16 @@
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-            "version": "1.12.2",
+            "version": "1.13.0",
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                 "url": "https://github.com/phpspec/prophecy.git",
-                "reference": "245710e971a030f42e08f4912863805570f23d39"
+                "reference": "be1996ed8adc35c3fd795488a653f4b518be70ea"
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-                "reference": "245710e971a030f42e08f4912863805570f23d39",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/be1996ed8adc35c3fd795488a653f4b518be70ea",
+                "reference": "be1996ed8adc35c3fd795488a653f4b518be70ea",
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@@ -3293,9 +3293,9 @@
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             "support": {
                 "issues": "https://github.com/phpspec/prophecy/issues",
-                "source": "https://github.com/phpspec/prophecy/tree/1.12.2"
+                "source": "https://github.com/phpspec/prophecy/tree/1.13.0"
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-            "time": "2020-12-19T10:15:11+00:00"
+            "time": "2021-03-17T13:42:18+00:00"
         },
         {
             "name": "phpstan/extension-installer",
@@ -3879,16 +3879,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.5.2",
+            "version": "9.5.3",
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                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "f661659747f2f87f9e72095bb207bceb0f151cb4"
+                "reference": "27241ac75fc37ecf862b6e002bf713b6566cbe41"
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-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/f661659747f2f87f9e72095bb207bceb0f151cb4",
-                "reference": "f661659747f2f87f9e72095bb207bceb0f151cb4",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/27241ac75fc37ecf862b6e002bf713b6566cbe41",
+                "reference": "27241ac75fc37ecf862b6e002bf713b6566cbe41",
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@@ -3966,7 +3966,7 @@
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             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.2"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.5.3"
             },
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@@ -3978,7 +3978,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2021-02-02T14:45:58+00:00"
+            "time": "2021-03-17T07:30:34+00:00"
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         {
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