diff --git a/composer.json b/composer.json
index 4959e62b..97e160a8 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
     "phpunit/phpunit": "^8.5.8",
     "psalm/plugin-phpunit": "~0.12.1",
     "psr/container": "^1.0.0",
-    "vimeo/psalm": "^3.14.2",
+    "vimeo/psalm": "^3.15",
     "zendframework/zend-servicemanager": "^2.0.0"
   },
   "config": {
diff --git a/composer.lock b/composer.lock
index 8e2866a3..175d5c1f 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": "21c5084d444cb1b72bc0c951e77dee42",
+    "content-hash": "d722153d819f8cca7476b3e1c02c730f",
     "packages": [
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             "name": "composer/package-versions-deprecated",
@@ -1689,6 +1689,39 @@
             "abandoned": "psr/container",
             "time": "2017-02-14T19:40:03+00:00"
         },
+        {
+            "name": "dnoegel/php-xdg-base-dir",
+            "version": "v0.1.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/dnoegel/php-xdg-base-dir.git",
+                "reference": "8f8a6e48c5ecb0f991c2fdcf5f154a47d85f9ffd"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/dnoegel/php-xdg-base-dir/zipball/8f8a6e48c5ecb0f991c2fdcf5f154a47d85f9ffd",
+                "reference": "8f8a6e48c5ecb0f991c2fdcf5f154a47d85f9ffd",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.2"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~7.0|~6.0|~5.0|~4.8.35"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "XdgBaseDir\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "implementation of xdg base directory specification for php",
+            "time": "2019-12-04T15:06:13+00:00"
+        },
         {
             "name": "doctrine/annotations",
             "version": "1.10.4",
@@ -5578,16 +5611,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "3.14.2",
+            "version": "3.15",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "3538fe1955d47f6ee926c0769d71af6db08aa488"
+                "reference": "de6e7f324f44dde540ebe7ebd4eb481b97c86f30"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/3538fe1955d47f6ee926c0769d71af6db08aa488",
-                "reference": "3538fe1955d47f6ee926c0769d71af6db08aa488",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/de6e7f324f44dde540ebe7ebd4eb481b97c86f30",
+                "reference": "de6e7f324f44dde540ebe7ebd4eb481b97c86f30",
                 "shasum": ""
             },
             "require": {
@@ -5596,6 +5629,7 @@
                 "composer/package-versions-deprecated": "^1.8.0",
                 "composer/semver": "^1.4 || ^2.0 || ^3.0",
                 "composer/xdebug-handler": "^1.1",
+                "dnoegel/php-xdg-base-dir": "^0.1.1",
                 "ext-dom": "*",
                 "ext-json": "*",
                 "ext-libxml": "*",
@@ -5624,10 +5658,11 @@
                 "phpmyadmin/sql-parser": "5.1.0",
                 "phpspec/prophecy": ">=1.9.0",
                 "phpunit/phpunit": "^7.5.16 || ^8.5 || ^9.0",
-                "psalm/plugin-phpunit": "^0.10",
+                "psalm/plugin-phpunit": "^0.11",
                 "slevomat/coding-standard": "^5.0",
                 "squizlabs/php_codesniffer": "^3.5",
-                "symfony/process": "^4.3"
+                "symfony/process": "^4.3",
+                "weirdan/prophecy-shim": "^1.0 || ^2.0"
             },
             "suggest": {
                 "ext-igbinary": "^2.0.5"
@@ -5671,7 +5706,7 @@
                 "inspection",
                 "php"
             ],
-            "time": "2020-08-22T14:01:26+00:00"
+            "time": "2020-09-01T22:09:30+00:00"
         },
         {
             "name": "webmozart/assert",