diff --git a/config.nims b/config.nims
index d21a38e..2d172a9 100644
--- a/config.nims
+++ b/config.nims
@@ -1,3 +1,4 @@
+--mm:orc
 task genHeaders, "generates the headers":
   selfExec("c -d:genHeader -f --verbosity:0 -c seeya.nim")
   selfExec("c -d:genHeader -f --verbosity:0 -c tests/mylib.nim")