diff --git a/composer.json b/composer.json
index a5c68ad87..83916c8e3 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
         "monolog/monolog": "^2.0",
         "php": "^7.2",
         "php-di/php-di": "^6.1",
-        "slim/psr7": "^1.0",
+        "slim/psr7": "^1.1",
         "slim/slim": "^4.5"
     },
     "require-dev": {