diff --git a/Project.toml b/Project.toml
index 4b0bc218..d0380170 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "StatisticalRethinking"
 uuid = "2d09df54-9d0f-5258-8220-54c2a3d4fbee"
-version = "4.9.0"
+version = "4.9.1"
 
 [deps]
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"