diff --git a/doc/changes.adoc b/doc/changes.adoc
new file mode 100644
index 0000000..303c291
--- /dev/null
+++ b/doc/changes.adoc
@@ -0,0 +1,15 @@
+////
+Copyright 2019 Peter Dimov
+Distributed under the Boost Software License, Version 1.0.
+http://www.boost.org/LICENSE_1_0.txt
+////
+
+[#changes]
+# Revision History
+:toc:
+:toc-title:
+:idprefix:
+
+## Changes in 1.73.0
+
+* Added `source_location`.
diff --git a/doc/index.adoc b/doc/index.adoc
index 883e664..95d52c2 100644
--- a/doc/index.adoc
+++ b/doc/index.adoc
@@ -21,6 +21,7 @@ similar in behavior and purpose to the standard macro `assert` from `<cassert>`.
 include::assert.adoc[]
 include::current_function.adoc[]
 include::source_location.adoc[]
+include::changes.adoc[]
 
 :leveloffset: -1
 
@@ -29,7 +30,7 @@ include::source_location.adoc[]
 
 This documentation is
 
-* Copyright 2002, 2007, 2014, 2017, 2019 Peter Dimov
+* Copyright 2002, 2007, 2014, 2017, 2019, 2020 Peter Dimov
 * Copyright 2011 Beman Dawes
 * Copyright 2015 Ion Gaztañaga
 * Distributed under the http://www.boost.org/LICENSE_1_0.txt[Boost Software License, Version 1.0].