diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13c3004..67133be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+## RENEE development version
+
 ## RENEE 2.6.0
 
 ### New features
diff --git a/VERSION b/VERSION
index e70b452..8f87ff7 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.6.0
+2.6.0-dev