diff --git a/Project.toml b/Project.toml
index ee8d16cac..4b78c6487 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "CalibrateEmulateSample"
 uuid = "95e48a1f-0bec-4818-9538-3db4340308e3"
 authors = ["CLIMA contributors <clima-software@caltech.edu>"]
-version = "0.3.0"
+version = "0.4.0"
 
 [deps]
 AbstractMCMC = "80f14c24-f653-4e6a-9b94-39d6b0f70001"