1 files changed, 1 insertions, 1 deletions
diff --git a/composer.json b/composer.json
index 872e08d..2b64ec0 100644
--- a/composer.json
+++ b/composer.json
@@ -50,7 +50,7 @@
         "zetacomponents/base": "~1.8"
     },
     "require-dev": {
-        "phpunit/phpunit": "~5.7",
+        "phpunit/phpunit": "~7.0",
         "zetacomponents/unit-test": "*"
     }
 }