diff --git a/composer.json b/composer.json
index 3352f72f..48211651 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
     "phpstan/phpstan-deprecation-rules": "~0.12.1",
     "phpstan/phpstan-phpunit": "~0.12.5",
     "phpstan/phpstan-strict-rules": "~0.12.1",
-    "phpunit/phpunit": "^7.5.19",
+    "phpunit/phpunit": "^7.5.20",
     "psalm/plugin-phpunit": "~0.8.0",
     "symfony/filesystem": "^4.4.0",
     "vimeo/psalm": "^3.8.2"
diff --git a/composer.lock b/composer.lock
index f111d224..8a443924 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": "d488b2ed3c3de689abe94f8f6bc30111",
+    "content-hash": "cd56e857095ce2c648bf2d75cbb50eed",
     "packages": [
         {
             "name": "composer/semver",
@@ -3719,16 +3719,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "7.5.19",
+            "version": "7.5.20",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "4263f76a3fc65385e242ef7357b99f3bed36707e"
+                "reference": "9467db479d1b0487c99733bb1e7944d32deded2c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/4263f76a3fc65385e242ef7357b99f3bed36707e",
-                "reference": "4263f76a3fc65385e242ef7357b99f3bed36707e",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/9467db479d1b0487c99733bb1e7944d32deded2c",
+                "reference": "9467db479d1b0487c99733bb1e7944d32deded2c",
                 "shasum": ""
             },
             "require": {
@@ -3799,7 +3799,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2020-01-06T16:53:05+00:00"
+            "time": "2020-01-08T08:45:45+00:00"
         },
         {
             "name": "pimple/pimple",