diff --git a/CHANGES b/CHANGES
index 040c6989..0373bb6f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -7,6 +7,8 @@ Changes with Unit 1.20.0                                         08 Oct 2020
     *) Change: AVIF and APNG image formats added to the default MIME type
        list.
 
+    *) Change: functional tests migrated to the pytest framework.
+
     *) Feature: the Python module now fully supports applications that use
        the ASGI 3.0 server interface.
 
diff --git a/docs/changes.xml b/docs/changes.xml
index ee3879f1..aa413e2a 100644
--- a/docs/changes.xml
+++ b/docs/changes.xml
@@ -43,6 +43,12 @@ AVIF and APNG image formats added to the default MIME type list.
 </para>
 </change>
 
+<change type="change">
+<para>
+functional tests migrated to the pytest framework.
+</para>
+</change>
+
 <change type="feature">
 <para>
 the Python module now fully supports applications that use the ASGI 3.0 server