diff --git a/Doc/conf.py b/Doc/conf.py
index 82b545f6ae0f39..08a2066004e197 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -290,7 +290,7 @@
 
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.
-html_last_updated_fmt = '%b %d, %Y (%H:%M UTC)'
+html_last_updated_fmt = '%b %d, %Y (%H:%M GMT%z)'
 
 # Path to find HTML templates.
 templates_path = ['tools/templates']