diff --git a/tools/build/Makefile-Moar.in b/tools/build/Makefile-Moar.in
index 12c4899f04..a65c6dd68a 100644
--- a/tools/build/Makefile-Moar.in
+++ b/tools/build/Makefile-Moar.in
@@ -294,10 +294,10 @@ m-bootstrap-files: $(M_STAGE2_OUTPUT)
 ## testing
 
 m-test: m-all
-	$(PROVE) -r --exec ".@slash@$(M_RUNNER)" t/nqp t/hll t/qregex t/p5regex t/qast t/moar t/serialization t/nativecall
+	$(PROVE) -r --exec ".@slash@$(M_RUNNER)" t/nqp t/hll t/qregex t/p5regex t/qast t/moar t/serialization t/nativecall t/concurrency
 
 m-test-loud: m-all
-	$(PROVE) -r -v --exec ".@slash@$(M_RUNNER)" t/nqp t/hll t/qregex t/p5regex t/qast t/moar t/serialization t/nativecall
+	$(PROVE) -r -v --exec ".@slash@$(M_RUNNER)" t/nqp t/hll t/qregex t/p5regex t/qast t/moar t/serialization t/nativecall t/concurrency
 
 m-core-test: $(M_RUNNER)
 	$(PROVE) -r --exec ".@slash@$(M_RUNNER)" t/nqp