--- a/contrib/wix/help.wxs	Sun Nov 04 12:51:14 2018 +0900
+++ b/contrib/wix/help.wxs	Mon Nov 12 21:28:54 2018 +0900
@@ -47,6 +47,7 @@
             <File Id="internals.censor.txt"       Name="censor.txt" />
             <File Id="internals.changegroups.txt" Name="changegroups.txt" />
             <File Id="internals.config.txt"       Name="config.txt" />
+            <File Id="internals.extensions.txt"   Name="extensions.txt" />
             <File Id="internals.linelog.txt"      Name="linelog.txt" />
             <File Id="internals.requirements.txt" Name="requirements.txt" />
             <File Id="internals.revlogs.txt"      Name="revlogs.txt" />