diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index a2ae58d..f29a671 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,7 +1,7 @@
 [bumpversion]
 commit = False
 tag = False
-current_version = 1.8.0
+current_version = 1.9.0
 
 [bumpversion:file:setup.cfg]
 
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index b33f8b4..093e679 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,13 @@
 Changelog
 =========
 
+1.9.0 (2024-04-12)
+------------------
+
+* Supported Django 4.2
+* Supported python 3.11
+* Dropped support of python 3.7, python 3.8, python 3.9
+
 1.8.0 (2023-09-18)
 ------------------
 
diff --git a/README.rst b/README.rst
index 6d6567b..fe909eb 100644
--- a/README.rst
+++ b/README.rst
@@ -2,7 +2,7 @@
 Documenten API CMIS adapter
 ===========================
 
-:Version: 1.8.0
+:Version: 1.9.0
 :Source: https://github.com/open-zaak/cmis-adapter
 :Keywords: CMIS, Documenten API, VNG, Common Ground
 :PythonVersion: 3.7
diff --git a/setup.cfg b/setup.cfg
index 6beb6fa..317e8d1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = drc-cmis
-version = 1.8.0
+version = 1.9.0
 description = An adapter to manage Documenten API resources in a CMIS backend.
 long_description = file: README.rst
 url = https://github.com/open-zaak/cmis-adapter