diff --git a/open_fortran_parser/_version.py b/open_fortran_parser/_version.py
index 99768d3..377228b 100644
--- a/open_fortran_parser/_version.py
+++ b/open_fortran_parser/_version.py
@@ -1,3 +1,3 @@
 """Version of open_fortran_parser package."""
 
-VERSION = '0.3.1'
+VERSION = '0.4.0'