diff --git a/version.txt b/version.txt
index 9e11b32fcaa96816319e5d0dcff9fb2873f04061..1d0ba9ea182b0f7354f3daf12120744ec5e0c2f8 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-0.3.1
+0.4.0