diff --git a/composer.json b/composer.json
index 842a6323..5f35c14c 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
     "phpunit/phpunit": "^7.5.20",
     "psalm/plugin-phpunit": "~0.8.1",
     "symfony/filesystem": "^4.4.0",
-    "vimeo/psalm": "^3.8.4"
+    "vimeo/psalm": "^3.8.5"
   },
   "config": {
     "platform": {
diff --git a/composer.lock b/composer.lock
index 9f2e1cd6..45449f44 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,28 +4,27 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "b35b203ccc44d89331c67afdf2d344ac",
+    "content-hash": "944e15e4990d4e29e46f033e4584bccb",
     "packages": [
         {
             "name": "composer/semver",
-            "version": "1.5.0",
+            "version": "1.5.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/semver.git",
-                "reference": "46d9139568ccb8d9e7cdd4539cab7347568a5e2e"
+                "reference": "c6bea70230ef4dd483e6bbcab6005f682ed3a8de"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/semver/zipball/46d9139568ccb8d9e7cdd4539cab7347568a5e2e",
-                "reference": "46d9139568ccb8d9e7cdd4539cab7347568a5e2e",
+                "url": "https://api.github.com/repos/composer/semver/zipball/c6bea70230ef4dd483e6bbcab6005f682ed3a8de",
+                "reference": "c6bea70230ef4dd483e6bbcab6005f682ed3a8de",
                 "shasum": ""
             },
             "require": {
                 "php": "^5.3.2 || ^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.5 || ^5.0.5",
-                "phpunit/phpunit-mock-objects": "2.3.0 || ^3.0"
+                "phpunit/phpunit": "^4.5 || ^5.0.5"
             },
             "type": "library",
             "extra": {
@@ -66,7 +65,7 @@
                 "validation",
                 "versioning"
             ],
-            "time": "2019-03-19T17:25:45+00:00"
+            "time": "2020-01-13T12:06:48+00:00"
         },
         {
             "name": "composer/xdebug-handler",
@@ -4584,16 +4583,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "3.8.4",
+            "version": "3.8.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "c2972dd759aa98561b75a5d68acfc4b634152464"
+                "reference": "e6ec5fa22a7b9e61670a24d07b3119aff80dcd89"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/c2972dd759aa98561b75a5d68acfc4b634152464",
-                "reference": "c2972dd759aa98561b75a5d68acfc4b634152464",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/e6ec5fa22a7b9e61670a24d07b3119aff80dcd89",
+                "reference": "e6ec5fa22a7b9e61670a24d07b3119aff80dcd89",
                 "shasum": ""
             },
             "require": {
@@ -4675,7 +4674,7 @@
                 "inspection",
                 "php"
             ],
-            "time": "2020-02-07T15:56:31+00:00"
+            "time": "2020-02-07T17:15:50+00:00"
         },
         {
             "name": "webmozart/assert",