diff --git a/system/afdko/afdko.info b/system/afdko/afdko.info
index 43bfdc8ba9..5b01fccef6 100644
--- a/system/afdko/afdko.info
+++ b/system/afdko/afdko.info
@@ -5,6 +5,6 @@ DOWNLOAD="https://github.com/adobe-type-tools/afdko/releases/download/3.8.0/afdk
 MD5SUM="b74fd869589bd672e9c50ab73a169e4e"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
-REQUIRES="python-fonttools wheel scikit-build"
+REQUIRES="python-fonttools wheel scikit-build lxml"
 MAINTAINER="Duncan Roe"
 EMAIL="duncan_roe@optusnet.com.au"