diff --git a/py/desispec/_version.py b/py/desispec/_version.py
index fba606f4f..7702e04a4 100644
--- a/py/desispec/_version.py
+++ b/py/desispec/_version.py
@@ -1 +1 @@
-__version__ = '0.66.2'
+__version__ = '0.66.2.dev8774'