diff --git a/tests/config.nims b/tests/config.nims
index 6a401e8..6efc656 100644
--- a/tests/config.nims
+++ b/tests/config.nims
@@ -1,3 +1,4 @@
 switch("path", "$projectDir/..")
+switch("threads", "on")
 # switch("hints", "off")
 # switch("verbosity", "0")