diff --git a/pkgs/development/python-modules/ofxparse/default.nix b/pkgs/development/python-modules/ofxparse/default.nix
index fbbd3899420..377138877c9 100644
--- a/pkgs/development/python-modules/ofxparse/default.nix
+++ b/pkgs/development/python-modules/ofxparse/default.nix
@@ -3,6 +3,7 @@
 , fetchPypi
 , six
 , beautifulsoup4
+, lxml
 }:
 
 buildPythonPackage rec {
@@ -14,7 +15,7 @@ buildPythonPackage rec {
     sha256 = "d8c81fd5089332106da1a2e8919c412c7c677f08af04d557ca767701a04e0918";
   };
 
-  propagatedBuildInputs = [ six beautifulsoup4 ];
+  propagatedBuildInputs = [ six beautifulsoup4 lxml ];
 
   meta = with stdenv.lib; {
     homepage = "http://sites.google.com/site/ofxparse";