diff --git a/composer.json b/composer.json
index 4d46765..1434d8c 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     },
     "require-dev": {
         "alleyinteractive/alley-coding-standards": "^2.0",
-        "mantle-framework/testkit": "^0.12",
+        "mantle-framework/testkit": "^1.1",
         "szepeviktor/phpstan-wordpress": "^1.1"
     },
     "config": {