diff --git a/Makefile b/Makefile
index 88b84e2..488ed52 100644
--- a/Makefile
+++ b/Makefile
@@ -30,7 +30,7 @@ sdist: $(TARBALL)
 $(TARBALL):
 	mkdir -p $$(dirname $(TARBALL))
 	$(RM) $(TARBALL)
-	tar caf $(TARBALL) $(SOURCES) $(DISTDIR)
+	tar czf $(TARBALL) $(SOURCES) $(DISTDIR)
 
 distclean:
 	$(RM) -r $$(dirname $(TARBALL)) src/
--
libgit2 0.21.2