diff --git a/composer.json b/composer.json
index 8a7d4eb44..3bdcb2e86 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
         "php": "^5.6 | ^7 | ^8",
         "wp-cli/wp-cli": "dev-main",
         "wp-cli/wp-cli-bundle": "dev-main",
-        "wp-cli/wp-cli-tests": "^3"
+        "wp-cli/wp-cli-tests": "^4"
     },
     "config": {
         "process-timeout": 7200,