diff --git a/composer.json b/composer.json
index 039f006e..a053aabe 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
     "ergebnis/test-util": "^1.4.0",
     "infection/infection": "~0.15.3",
     "jangregor/phpstan-prophecy": "~0.8.1",
-    "phpstan/extension-installer": "^1.0.5",
+    "phpstan/extension-installer": "^1.0.6",
     "phpstan/phpstan": "~0.12.59",
     "phpstan/phpstan-deprecation-rules": "~0.12.5",
     "phpstan/phpstan-doctrine": "~0.12.25",
diff --git a/composer.lock b/composer.lock
index 0914eef1..10a35a87 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": "5a4af24c281ec1b6e1a2b58559b83837",
+    "content-hash": "f5ad6bab9d02729a0e4c6653517655c8",
     "packages": [
         {
             "name": "composer/package-versions-deprecated",
@@ -3765,16 +3765,16 @@
         },
         {
             "name": "phpstan/extension-installer",
-            "version": "1.0.5",
+            "version": "1.0.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/extension-installer.git",
-                "reference": "5c2da3846819f951385cb6a25d3277051481c48a"
+                "reference": "5de413b3113304d81b4d895caa443fda2da25b54"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/extension-installer/zipball/5c2da3846819f951385cb6a25d3277051481c48a",
-                "reference": "5c2da3846819f951385cb6a25d3277051481c48a",
+                "url": "https://api.github.com/repos/phpstan/extension-installer/zipball/5de413b3113304d81b4d895caa443fda2da25b54",
+                "reference": "5de413b3113304d81b4d895caa443fda2da25b54",
                 "shasum": ""
             },
             "require": {
@@ -3784,13 +3784,9 @@
             },
             "require-dev": {
                 "composer/composer": "^1.8",
-                "consistence/coding-standard": "^3.8",
-                "dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
-                "ergebnis/composer-normalize": "^2.0.2",
-                "phing/phing": "^2.16",
+                "phing/phing": "^2.16.3",
                 "php-parallel-lint/php-parallel-lint": "^1.2.0",
-                "phpstan/phpstan-strict-rules": "^0.11",
-                "slevomat/coding-standard": "^5.0.4"
+                "phpstan/phpstan-strict-rules": "^0.11 || ^0.12"
             },
             "type": "composer-plugin",
             "extra": {
@@ -3806,7 +3802,7 @@
                 "MIT"
             ],
             "description": "Composer plugin for automatic installation of PHPStan extensions",
-            "time": "2020-08-30T12:06:42+00:00"
+            "time": "2020-12-12T15:17:16+00:00"
         },
         {
             "name": "phpstan/phpstan",