diff --git a/docs/templates.txt b/docs/templates.txt
index 5b8eb13db0..c351c951c9 100644
--- a/docs/templates.txt
+++ b/docs/templates.txt
@@ -953,7 +953,7 @@ Available format strings:
     U                 Not implemented.
     w                 Day of the week, digits without           ``'0'`` (Sunday) to ``'6'`` (Saturday)
                       leading zeros.
-    W                 ISO-8601 week number of year, with        ``1``, ``23``
+    W                 ISO-8601 week number of year, with        ``1``, ``53``
                       weeks starting on Monday.
     y                 Year, 2 digits.                           ``'99'``
     Y                 Year, 4 digits.                           ``'1999'``