diff --git a/CMakeLists.txt b/CMakeLists.txt
index b57d2f94..84090873 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,14 +8,14 @@ cmake_minimum_required(VERSION 3.12)
 ################################################################################
 
 # The major, minor, and micro version numbers of the project.
-set(JAS_VERSION_MAJOR 3)
+set(JAS_VERSION_MAJOR 4)
 set(JAS_VERSION_MINOR 0)
-set(JAS_VERSION_PATCH 6)
+set(JAS_VERSION_PATCH 0)
 
 # The shared library versioning information.
 # Guidelines on how to change this information can be found below.
-# The shared library version was set to 6.0.0 for JasPer version 3.0.0.
-set(JAS_SO_VERSION 6)
+# The shared library version was set to 7.0.0 for JasPer version 4.0.0.
+set(JAS_SO_VERSION 7)
 set(JAS_SO_MINOR 0)
 set(JAS_SO_RELEASE 0)
 
diff --git a/NEWS.txt b/NEWS.txt
index 898d8a50..e9be60a7 100644
--- a/NEWS.txt
+++ b/NEWS.txt
@@ -1,4 +1,4 @@
-unreleased
+4.0.0 (2022-11-05)
 ==================
 
 * Improve static linking (##336).