diff --git a/DESCRIPTION b/DESCRIPTION
index 1ace1f1..5860d0d 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: mmconvert
-Version: 0.3-3
-Date: 2023-03-17
+Version: 0.4
+Date: 2023-03-22
 Title: Mouse Map Converter
 Description: Function to convert mouse genome positions between the build 39 physical map and the Cox genetic map <doi:10.1534/genetics.109.105486>.
 Author: Karl W Broman [aut, cre] (<https://orcid.org/0000-0002-4914-6671>)
diff --git a/NEWS.md b/NEWS.md
index 8df4d16..2d21563 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-## mmconvert 0.3-3 (2023-03-17)
+## mmconvert 0.4 (2023-03-22)
 
 - Revised Cox genetic maps, estimated using the original crimap software.