diff --git a/composer.lock b/composer.lock
index 71855a6..b622f7d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -681,16 +681,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "8.5.3",
+            "version": "8.5.4",
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                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "67750516bc02f300e2742fed2f50177f8f37bedf"
+                "reference": "8474e22d7d642f665084ba5ec780626cbd1efd23"
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             "dist": {
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-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/67750516bc02f300e2742fed2f50177f8f37bedf",
-                "reference": "67750516bc02f300e2742fed2f50177f8f37bedf",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/8474e22d7d642f665084ba5ec780626cbd1efd23",
+                "reference": "8474e22d7d642f665084ba5ec780626cbd1efd23",
                 "shasum": ""
             },
             "require": {
@@ -760,7 +760,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2020-03-31T08:52:04+00:00"
+            "time": "2020-04-23T04:39:42+00:00"
         },
         {
             "name": "sebastian/code-unit-reverse-lookup",
@@ -1477,16 +1477,16 @@
         },
         {
             "name": "webmozart/assert",
-            "version": "1.7.0",
+            "version": "1.8.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/webmozart/assert.git",
-                "reference": "aed98a490f9a8f78468232db345ab9cf606cf598"
+                "reference": "ab2cb0b3b559010b75981b1bdce728da3ee90ad6"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/webmozart/assert/zipball/aed98a490f9a8f78468232db345ab9cf606cf598",
-                "reference": "aed98a490f9a8f78468232db345ab9cf606cf598",
+                "url": "https://api.github.com/repos/webmozart/assert/zipball/ab2cb0b3b559010b75981b1bdce728da3ee90ad6",
+                "reference": "ab2cb0b3b559010b75981b1bdce728da3ee90ad6",
                 "shasum": ""
             },
             "require": {
@@ -1494,7 +1494,7 @@
                 "symfony/polyfill-ctype": "^1.8"
             },
             "conflict": {
-                "vimeo/psalm": "<3.6.0"
+                "vimeo/psalm": "<3.9.1"
             },
             "require-dev": {
                 "phpunit/phpunit": "^4.8.36 || ^7.5.13"
@@ -1521,7 +1521,7 @@
                 "check",
                 "validate"
             ],
-            "time": "2020-02-14T12:15:55+00:00"
+            "time": "2020-04-18T12:12:48+00:00"
         }
     ],
     "aliases": [],