diff --git a/Makefile b/Makefile
index 9ec1a84b..04754097 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,7 @@ dist_src: dist_check_version
 	mv prism "prism-$(VERSION)-src"
 	(cd "prism-$(VERSION)-src"; $(MAKE) clean_all )
 	(cd "prism-$(VERSION)-src"; $(MAKE) dist_tidy )
+	tar cfz "prism-$(VERSION)-src.tar.gz" "prism-$(VERSION)-src"
 
 dist_check_version:
 	@if [ "$(VERSION)" = "" ]; then echo "Usage: make dist_src VERSION=XXX"; exit 1; fi