diff --git a/composer.json b/composer.json
index c67ac82..d0d2bb2 100644
--- a/composer.json
+++ b/composer.json
@@ -35,7 +35,7 @@
         }
     },
     "require-dev": {
-        "vimeo/psalm": "~5.15",
+        "vimeo/psalm": "~5.26",
         "innmind/black-box": "~5.5",
         "innmind/coding-standard": "~2.0"
     }