diff --git a/releasenotes-openda.md b/releasenotes-openda.md
index e9e7dde13..10d9f70c6 100644
--- a/releasenotes-openda.md
+++ b/releasenotes-openda.md
@@ -1,18 +1,29 @@
 Release Notes
 =============
 
-OpenDA - Version 3.3.0
+OpenDA - Version 3.4.0
 ----------------------
 
 ### Improvements
 
-- Fixed time rounding issues
-- Fixed exe reference in additional compute actions
-- Support multiple state vectors in writing kalman gain to netcdf_cf
-- Improved logging efficiency when printing many parameters
+- Fixed time rounding issue in DFlowFMTimeInfo
+- Fixed Delft3D calibration wind example
+- Improved (additional) stop criteria in Dud
+- Allow writing larger files for Kalman Gain in netcdf_cf format
+- D-Flow FM examples update to use D-Flow FM version 2026.01
 - Documentation improvements
+- Update summer school exercises
 
 ### New functionalities
 
-- Added support for overruling station variable and dimension in NetcdfDataObject
-- Added support for Astronomical Components in D-FLow FM .bc files
+- FileCopier extended with option to add time stamp in file name
+- Option to add timeOffset to last analysis in order to let the simulation run until the end time without analysis step
+- Method added to estimate missing observations in steady state filter
+- Add HEC-HMS wrapper
+- Add option in Dud for maximum total evaluations
+- Extend run files with memory option
+- Geometry info added to SwanState to support localization
+
+### Removed functionalities
+
+- Removed Costa for Windows
diff --git a/version.properties b/version.properties
index 56769eaa1..aef5edfa1 100644
--- a/version.properties
+++ b/version.properties
@@ -1,3 +1,3 @@
 #openda and java version settings
-version=3.3.0
+version=3.4.0
 source=1.8