diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f491f4..80258c5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # MPRAflow Changelog
 
+## v2.3.1
+
+### association.nf
+
+* Bugfix empty design file (see issue #45)
+
 ## v2.3
 
 ### global changes