diff --git a/macapype/_version.py b/macapype/_version.py
index 78b9ebfb..6c91a23c 100644
--- a/macapype/_version.py
+++ b/macapype/_version.py
@@ -1 +1 @@
-__version__ = '0.4.1rc1'
+__version__ = '0.4.1-rc1'