diff --git a/faststreams.nimble b/faststreams.nimble
index 975854e..f29c946 100644
--- a/faststreams.nimble
+++ b/faststreams.nimble
@@ -26,6 +26,8 @@ proc build(args, path: string) =
 
 proc run(args, path: string) =
   build args & " -r", path
+  if (NimMajor, NimMinor) > (1, 6):
+    build args & " --mm:refc -r", path
 
 task test, "Run all tests":
   # TODO asyncdispatch backend is broken / untested