diff --git a/CHANGES.md b/CHANGES.md
index 62a8f57..a26c603 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,11 @@
 # Changes for bmi-topography
 
+## 0.8.6 (unreleased)
+
+
+- Nothing changed yet.
+
+
 ## 0.8.5 (2024-08-18)
 
 -  Check example notebooks (#75)
diff --git a/bmi_topography/_version.py b/bmi_topography/_version.py
index af46754..ee14a35 100644
--- a/bmi_topography/_version.py
+++ b/bmi_topography/_version.py
@@ -1 +1 @@
-__version__ = "0.8.5"
+__version__ = "0.8.6.dev0"