diff --git a/libraries/html5lib/html5lib.info b/libraries/html5lib/html5lib.info
index 149b8708e3..bbcd144dce 100644
--- a/libraries/html5lib/html5lib.info
+++ b/libraries/html5lib/html5lib.info
@@ -5,6 +5,6 @@ DOWNLOAD="https://github.com/html5lib/html5lib-python/archive/0.9999999/html5lib
 MD5SUM="2ca78b1ec5852779bc121a97da6e8d4d"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
-REQUIRES=""
+REQUIRES="six"
 MAINTAINER="Larry Hajali"
 EMAIL="larryhaja[at]gmail[dot]com"