diff --git a/CHANGES.rst b/CHANGES.rst
index 3e76714a..d65fadf7 100755
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 3Di Results Analysis changelog
 ========================
 
+3.13 (unreleased)
+-----------------
+
+- Nothing changed yet.
+
+
 3.12 (2024-12-10)
 -----------------
 
diff --git a/version.rst b/version.rst
index e4fba218..a611fd58 100644
--- a/version.rst
+++ b/version.rst
@@ -1 +1 @@
-3.12
+3.13.dev0