diff --git a/Project.toml b/Project.toml
index 97616a7b7..331bf967b 100644
--- a/Project.toml
+++ b/Project.toml
@@ -2,7 +2,7 @@ name = "Caesar"
 uuid = "62eebf14-49bc-5f46-9df9-f7b7ef379406"
 keywords = ["SLAM", "state-estimation", "mm-iSAM", "inference", "robotics"]
 desc = "Non-Gaussian simultaneous localization and mapping"
-version = "0.3.1"
+version = "0.4.0"
 
 [deps]
 ApproxManifoldProducts = "9bbbb610-88a1-53cd-9763-118ce10c1f89"