diff --git a/swiftbench/__init__.py b/swiftbench/__init__.py
index 58d478a..36173fa 100644
--- a/swiftbench/__init__.py
+++ b/swiftbench/__init__.py
@@ -1 +1 @@
-__version__ = '1.2.0'
+__version__ = '1.2.1-dev'