diff --git a/covsirphy/__version__.py b/covsirphy/__version__.py
index 2c2d37d76..056ccde32 100644
--- a/covsirphy/__version__.py
+++ b/covsirphy/__version__.py
@@ -1 +1 @@
-__version__ = "3.0.0.dev9"
+__version__ = "3.0.0.dev10"