diff --git a/thinc/about.py b/thinc/about.py
index 19a87d71d..ebf1604dc 100644
--- a/thinc/about.py
+++ b/thinc/about.py
@@ -1,2 +1,2 @@
-__version__ = "9.0.0.dev4"
+__version__ = "9.0.0.dev5"
 __release__ = True