diff --git a/CHANGES.rst b/CHANGES.rst
index 74bbf60..2191a5c 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,12 @@
 Changelog of fews-3di
 ===================================================
 
+3.8 (unreleased)
+----------------
+
+- Nothing changed yet.
+
+
 3.7 (2024-08-21)
 ----------------
 
diff --git a/pyproject.toml b/pyproject.toml
index d15845f..0ee7c7e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ requires = ["setuptools>=69"]
 [project]
 name = "fews-3di"
 requires-python = ">=3.8"
-version = "3.7"
+version = "3.8.dev0"
 dependencies = [
   "netCDF4",
   "pandas",