diff --git a/mesop/version.py b/mesop/version.py
index d22f868f..e461ff1d 100644
--- a/mesop/version.py
+++ b/mesop/version.py
@@ -1,6 +1,6 @@
 """Contains the version string."""
 
-VERSION = "0.12.7"
+VERSION = "0.12.8beta1"
 
 if __name__ == "__main__":
   print(VERSION)