diff --git a/pkgs/sdk/server/contract-tests/TestService.cs b/pkgs/sdk/server/contract-tests/TestService.cs
index 24bfcd28..6aa39cdc 100644
--- a/pkgs/sdk/server/contract-tests/TestService.cs
+++ b/pkgs/sdk/server/contract-tests/TestService.cs
@@ -42,6 +42,7 @@ public class Webapp
             "inline-context-all",
             "anonymous-redaction",
             "evaluation-hooks",
+            "hook-environment-id",
             "flag-change-listeners",
             "flag-value-change-listeners",
             "client-prereq-events",