diff --git a/docs/installation.rst b/docs/installation.rst
index 252ad6e6c..7afccc5b0 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -42,9 +42,10 @@ Install Pillow with :command:`pip`::
     python3 -m pip install --upgrade pip
     python3 -m pip install --upgrade Pillow
 
-Optionally, install :pypi:`olefile` for Pillow to read FPX and MIC images::
+Optionally, install :pypi:`defusedxml` for Pillow to read XMP data,
+and :pypi:`olefile` for Pillow to read FPX and MIC images::
 
-    python3 -m pip install --upgrade olefile
+    python3 -m pip install --upgrade defusedxml olefile
 
 
 .. tab:: Linux