diff --git a/composer.json b/composer.json
index 58a2960c..259099d3 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
   },
   "require-dev": {
     "composer/composer": "^1.10.8 || ^2.0.0",
-    "composer/package-versions-deprecated": "^1.10.99",
+    "composer/package-versions-deprecated": "^1.11.99",
     "ergebnis/phpstan-rules": "~0.15.1",
     "ergebnis/test-util": "^1.0.0",
     "jangregor/phpstan-prophecy": "~0.8.0",
diff --git a/composer.lock b/composer.lock
index 19ee4dbe..0da0c29d 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": "b68dc4da0ad9ab40e10411fbe6c84483",
+    "content-hash": "1bc4d8ecb3229431318119e5a25717f8",
     "packages": [
         {
             "name": "ergebnis/json-normalizer",
@@ -456,16 +456,16 @@
         },
         {
             "name": "composer/package-versions-deprecated",
-            "version": "1.10.99.1",
+            "version": "1.11.99",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/package-versions-deprecated.git",
-                "reference": "68c9b502036e820c33445ff4d174327f6bb87486"
+                "reference": "c8c9aa8a14cc3d3bec86d0a8c3fa52ea79936855"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/package-versions-deprecated/zipball/68c9b502036e820c33445ff4d174327f6bb87486",
-                "reference": "68c9b502036e820c33445ff4d174327f6bb87486",
+                "url": "https://api.github.com/repos/composer/package-versions-deprecated/zipball/c8c9aa8a14cc3d3bec86d0a8c3fa52ea79936855",
+                "reference": "c8c9aa8a14cc3d3bec86d0a8c3fa52ea79936855",
                 "shasum": ""
             },
             "require": {
@@ -473,7 +473,7 @@
                 "php": "^7 || ^8"
             },
             "replace": {
-                "ocramius/package-versions": "1.10.99"
+                "ocramius/package-versions": "1.11.99"
             },
             "require-dev": {
                 "composer/composer": "^1.9.3 || ^2.0@dev",
@@ -521,7 +521,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-08-13T12:55:41+00:00"
+            "time": "2020-08-25T05:50:16+00:00"
         },
         {
             "name": "composer/semver",