diff --git a/composer.json b/composer.json
index 658c97dc..a9b4e435 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
     "phpstan/phpstan-strict-rules": "~0.12.2",
     "phpunit/phpunit": "^7.5.20",
     "psalm/plugin-phpunit": "~0.8.1",
-    "vimeo/psalm": "^3.8.3"
+    "vimeo/psalm": "^3.8.4"
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     "platform": {
diff --git a/composer.lock b/composer.lock
index 8297a928..30eeec65 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",
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     ],
-    "content-hash": "adcd6279c125306367eb83e82162b470",
+    "content-hash": "35426d717de489f72f7b97cb36845c9a",
     "packages": [],
     "packages-dev": [
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@@ -86,16 +86,16 @@
         },
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-            "version": "v1.7.1",
+            "version": "v1.7.2",
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                 "url": "https://github.com/amphp/byte-stream.git",
-                "reference": "9d8205686a004948475dc43f8a88d2fa5e75a113"
+                "reference": "1e52f1752b2e20e2a7e464476ef887a2388e3832"
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-                "url": "https://api.github.com/repos/amphp/byte-stream/zipball/9d8205686a004948475dc43f8a88d2fa5e75a113",
-                "reference": "9d8205686a004948475dc43f8a88d2fa5e75a113",
+                "url": "https://api.github.com/repos/amphp/byte-stream/zipball/1e52f1752b2e20e2a7e464476ef887a2388e3832",
+                "reference": "1e52f1752b2e20e2a7e464476ef887a2388e3832",
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@@ -141,7 +141,7 @@
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-            "time": "2019-10-27T14:33:41+00:00"
+            "time": "2020-01-29T18:22:23+00:00"
         },
         {
             "name": "beberlei/assert",
@@ -4327,16 +4327,16 @@
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         {
             "name": "symfony/console",
-            "version": "v4.4.2",
+            "version": "v4.4.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "82437719dab1e6bdd28726af14cb345c2ec816d0"
+                "reference": "f512001679f37e6a042b51897ed24a2f05eba656"
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-                "url": "https://api.github.com/repos/symfony/console/zipball/82437719dab1e6bdd28726af14cb345c2ec816d0",
-                "reference": "82437719dab1e6bdd28726af14cb345c2ec816d0",
+                "url": "https://api.github.com/repos/symfony/console/zipball/f512001679f37e6a042b51897ed24a2f05eba656",
+                "reference": "f512001679f37e6a042b51897ed24a2f05eba656",
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             "require": {
@@ -4399,7 +4399,7 @@
             ],
             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
-            "time": "2019-12-17T10:32:23+00:00"
+            "time": "2020-01-25T12:44:29+00:00"
         },
         {
             "name": "symfony/debug",
@@ -5285,21 +5285,22 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "3.8.3",
+            "version": "3.8.4",
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                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "389af1bfc739bfdff3f9e3dc7bd6499aee51a831"
+                "reference": "c2972dd759aa98561b75a5d68acfc4b634152464"
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-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/389af1bfc739bfdff3f9e3dc7bd6499aee51a831",
-                "reference": "389af1bfc739bfdff3f9e3dc7bd6499aee51a831",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/c2972dd759aa98561b75a5d68acfc4b634152464",
+                "reference": "c2972dd759aa98561b75a5d68acfc4b634152464",
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             "require": {
                 "amphp/amp": "^2.1",
                 "amphp/byte-stream": "^1.5",
+                "composer/semver": "^1.4",
                 "composer/xdebug-handler": "^1.1",
                 "ext-dom": "*",
                 "ext-json": "*",
@@ -5312,8 +5313,8 @@
                 "nikic/php-parser": "^4.3",
                 "ocramius/package-versions": "^1.2",
                 "openlss/lib-array2xml": "^1.0",
-                "php": "^7.1.3",
-                "sebastian/diff": "^3.0",
+                "php": "^7.1.3|^8",
+                "sebastian/diff": "^3.0 || ^4.0",
                 "symfony/console": "^3.4.17 || ^4.1.6 || ^5.0",
                 "webmozart/glob": "^4.1",
                 "webmozart/path-util": "^2.3"
@@ -5326,7 +5327,7 @@
                 "ext-curl": "*",
                 "phpmyadmin/sql-parser": "^5.0",
                 "phpspec/prophecy": ">=1.9.0",
-                "phpunit/phpunit": "^7.5 || ^8.0",
+                "phpunit/phpunit": "^7.5.16 || ^8.0",
                 "psalm/plugin-phpunit": "^0.6",
                 "slevomat/coding-standard": "^5.0",
                 "squizlabs/php_codesniffer": "^3.5",
@@ -5375,7 +5376,7 @@
                 "inspection",
                 "php"
             ],
-            "time": "2020-01-15T03:46:19+00:00"
+            "time": "2020-02-07T15:56:31+00:00"
         },
         {
             "name": "webmozart/assert",