diff --git a/CHANGELOG b/CHANGELOG
index f1f35b7..2d1c9f6 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+2.9.0 / 2024-04-17
+==================
+ * Ported to Qt6.
+
 2.8.0 / 2023-11-05
 ==================
  * Updated screenshots and added metadata file.
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e0f7abf..a59b55d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.18.0 FATAL_ERROR)
 # CMP0000: Call the cmake_minimum_required() command at the beginning of the top-level
 # CMakeLists.txt file even before calling the project() command.
 # The cmake_minimum_required(VERSION) command implicitly invokes the cmake_policy(VERSION)