diff --git a/wmressel/ChangeLog b/wmressel/ChangeLog
new file mode 100644
index 0000000..f309752
--- /dev/null
+++ b/wmressel/ChangeLog
@@ -0,0 +1,13 @@
+[0.9] 2017-08-27
+ - Now maintained by the Window Maker Team.
+ - Rename configure.in -> configure.ac.
+ - Remove obselete AC_C_CONST macro.
+ - Use pkg-config to find libraries.
+ - Use automake.
+ - Use wmgeneral from libdockapp.
+ - Port to GTK+3.
+ - Update GPL2 text.
+ - Remove trailing whitespace.
+ - Update documentation.
+
+(The original author did not keep a changelog for previous versions.)
diff --git a/wmressel/configure.ac b/wmressel/configure.ac
index 6536355..95f3317 100644
--- a/wmressel/configure.ac
+++ b/wmressel/configure.ac
@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_INIT([wmressel], [0.8], [wmaker-dev@lists.windowmaker.org])
+AC_INIT([wmressel], [0.9], [wmaker-dev@lists.windowmaker.org])
 AC_CONFIG_SRCDIR([src/wmressel.c])
 AM_INIT_AUTOMAKE([foreign subdir-objects])