diff --git a/Project.toml b/Project.toml
index 2773a0fb..d200393c 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "EffectiveWaves"
 uuid = "37e8709b-1ed2-53db-b26a-3571262b3cb4"
 authors = ["Artur L. Gower <arturgower@gmail.com>"]
-version = "0.4.0"
+version = "0.3.0"
 
 [deps]
 ApproxFun = "28f2ccd6-bb30-5033-b560-165f7b14dc2f"