diff --git a/HISTORY.rst b/HISTORY.rst
index bf4ba555ee..ac1064d81e 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -7,6 +7,8 @@
 - Add support for check for the latest released version of Mayan from the
   About menu.
 - Rewrite document indexing code to be faster and use less locking.
+- Use a predefined file path for the file lock.
+- Catch documents with not document version when displaying their thumbnails.
 
 2.2 (2017-04-26)
 ================
diff --git a/docs/releases/2.2.1.rst b/docs/releases/2.2.1.rst
index c74f6743f5..6ae60a1982 100644
--- a/docs/releases/2.2.1.rst
+++ b/docs/releases/2.2.1.rst
@@ -23,6 +23,8 @@ Changes
 - Add support for rebuilding specific indexes instead of only being able to
   rebuild all index.
 - Rewrite document indexing code to be faster and use less locking.
+- Use a predefined file path for the file lock.
+- Catch documents with not document version when displaying their thumbnails.
 
 Removals
 --------