diff --git a/composer.lock b/composer.lock
index ee92abb..c891c8f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -92,16 +92,16 @@
         },
         {
             "name": "beberlei/assert",
-            "version": "v3.2.7",
+            "version": "v3.3.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/beberlei/assert.git",
-                "reference": "d63a6943fc4fd1a2aedb65994e3548715105abcf"
+                "reference": "5e721d7e937ca3ba2cdec1e1adf195f9e5188372"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/beberlei/assert/zipball/d63a6943fc4fd1a2aedb65994e3548715105abcf",
-                "reference": "d63a6943fc4fd1a2aedb65994e3548715105abcf",
+                "url": "https://api.github.com/repos/beberlei/assert/zipball/5e721d7e937ca3ba2cdec1e1adf195f9e5188372",
+                "reference": "5e721d7e937ca3ba2cdec1e1adf195f9e5188372",
                 "shasum": ""
             },
             "require": {
@@ -109,12 +109,13 @@
                 "ext-json": "*",
                 "ext-mbstring": "*",
                 "ext-simplexml": "*",
-                "php": "^7"
+                "php": "^7.0 || ^8.0"
             },
             "require-dev": {
                 "friendsofphp/php-cs-fixer": "*",
-                "phpstan/phpstan-shim": "*",
-                "phpunit/phpunit": ">=6.0.0 <8"
+                "phpstan/phpstan": "*",
+                "phpunit/phpunit": ">=6.0.0",
+                "yoast/phpunit-polyfills": "^0.1.0"
             },
             "suggest": {
                 "ext-intl": "Needed to allow Assertion::count(), Assertion::isCountable(), Assertion::minCount(), and Assertion::maxCount() to operate on ResourceBundles"
@@ -150,7 +151,11 @@
                 "assertion",
                 "validation"
             ],
-            "time": "2019-12-19T17:51:41+00:00"
+            "support": {
+                "issues": "https://github.com/beberlei/assert/issues",
+                "source": "https://github.com/beberlei/assert/tree/v3.3.1"
+            },
+            "time": "2021-04-18T20:11:03+00:00"
         },
         {
             "name": "fgrosse/phpasn1",
@@ -3185,5 +3190,6 @@
         "ext-mbstring": "*",
         "lib-openssl": "*"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.0.0"
 }