diff --git a/VERSION.cmake b/VERSION.cmake
index f010a00804460..5e8ac49db95a6 100644
--- a/VERSION.cmake
+++ b/VERSION.cmake
@@ -1,6 +1,6 @@
 set( MIRALL_VERSION_MAJOR 3 )
-set( MIRALL_VERSION_MINOR 8 )
-set( MIRALL_VERSION_PATCH 84 )
+set( MIRALL_VERSION_MINOR 9 )
+set( MIRALL_VERSION_PATCH 0 )
 set( MIRALL_VERSION_YEAR  2023 )
 set( MIRALL_SOVERSION 0 )
 
diff --git a/doc/conf.py b/doc/conf.py
index 634072ce1cd7b..2446856045b5b 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -50,7 +50,7 @@
 # The short X.Y version.
 version = '3.9'
 # The full version, including alpha/beta/rc tags.
-release = '3.8.84'
+release = '3.9.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.