diff --git a/doc/config/conf.d/mime.conf b/doc/config/conf.d/mime.conf
index a3c6f0c3..8cfdfe72 100644
--- a/doc/config/conf.d/mime.conf
+++ b/doc/config/conf.d/mime.conf
@@ -67,6 +67,7 @@ mimetype.assign             = (
   ".tbz"          =>      "application/x-bzip-compressed-tar",
   ".tar.bz2"      =>      "application/x-bzip-compressed-tar",
   ".rpm"          =>      "application/x-rpm",
+  ".json"         =>      "application/json",
   # make the default mime type application/octet-stream.
   ""              =>      "application/octet-stream",
  )