diff --git a/composer.json b/composer.json
index 93e05977..e7163a16 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
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     "psalm/plugin-phpunit": "~0.15.1",
     "symfony/filesystem": "^4.4.0",
-    "vimeo/psalm": "^4.6.4"
+    "vimeo/psalm": "^4.7.0"
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diff --git a/composer.lock b/composer.lock
index 40e2ab92..bf363177 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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+    "content-hash": "c759c9cd689987389bee722ad79efc35",
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@@ -598,16 +598,16 @@
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+            "version": "v5.2.6",
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                 "url": "https://github.com/symfony/console.git",
-                "reference": "938ebbadae1b0a9c9d1ec313f87f9708609f1b79"
+                "reference": "35f039df40a3b335ebf310f244cb242b3a83ac8d"
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-                "reference": "938ebbadae1b0a9c9d1ec313f87f9708609f1b79",
+                "url": "https://api.github.com/repos/symfony/console/zipball/35f039df40a3b335ebf310f244cb242b3a83ac8d",
+                "reference": "35f039df40a3b335ebf310f244cb242b3a83ac8d",
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@@ -675,7 +675,7 @@
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-                "source": "https://github.com/symfony/console/tree/v5.2.5"
+                "source": "https://github.com/symfony/console/tree/v5.2.6"
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@@ -691,7 +691,7 @@
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-            "time": "2021-03-06T13:42:15+00:00"
+            "time": "2021-03-28T09:42:18+00:00"
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@@ -1930,16 +1930,16 @@
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-            "version": "v5.2.4",
+            "version": "v5.2.6",
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-                "reference": "4e78d7d47061fa183639927ec40d607973699609"
+                "reference": "ad0bd91bce2054103f5eaa18ebeba8d3bc2a0572"
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-                "reference": "4e78d7d47061fa183639927ec40d607973699609",
+                "url": "https://api.github.com/repos/symfony/string/zipball/ad0bd91bce2054103f5eaa18ebeba8d3bc2a0572",
+                "reference": "ad0bd91bce2054103f5eaa18ebeba8d3bc2a0572",
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@@ -1993,7 +1993,7 @@
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-                "source": "https://github.com/symfony/string/tree/v5.2.4"
+                "source": "https://github.com/symfony/string/tree/v5.2.6"
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@@ -2009,7 +2009,7 @@
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-            "time": "2021-02-16T10:20:28+00:00"
+            "time": "2021-03-17T17:12:15+00:00"
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     "packages-dev": [
@@ -5649,16 +5649,16 @@
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-            "version": "4.6.4",
+            "version": "4.7.0",
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                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "97fe86c4e158b5a57c5150aa5055c38b5a809aab"
+                "reference": "d4377c0baf3ffbf0b1ec6998e8d1be2a40971005"
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-                "reference": "97fe86c4e158b5a57c5150aa5055c38b5a809aab",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/d4377c0baf3ffbf0b1ec6998e8d1be2a40971005",
+                "reference": "d4377c0baf3ffbf0b1ec6998e8d1be2a40971005",
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@@ -5700,6 +5700,7 @@
                 "slevomat/coding-standard": "^6.3.11",
                 "squizlabs/php_codesniffer": "^3.5",
                 "symfony/process": "^4.3",
+                "weirdan/phpunit-appveyor-reporter": "^1.0.0",
                 "weirdan/prophecy-shim": "^1.0 || ^2.0"
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@@ -5747,9 +5748,9 @@
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                 "issues": "https://github.com/vimeo/psalm/issues",
-                "source": "https://github.com/vimeo/psalm/tree/4.6.4"
+                "source": "https://github.com/vimeo/psalm/tree/4.7.0"
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-            "time": "2021-03-16T23:28:18+00:00"
+            "time": "2021-03-29T03:54:38+00:00"
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         {
             "name": "webmozart/assert",