diff --git a/python-beautifulsoup4.spec b/python-beautifulsoup4.spec
index 37b5557..baf3cc3 100644
--- a/python-beautifulsoup4.spec
+++ b/python-beautifulsoup4.spec
@@ -17,6 +17,7 @@ BuildRequires:  python-devel >= 2.7
 BuildRequires:  python-html5lib
 BuildRequires:  python-setuptools
 BuildRequires:  python-lxml
+BuildRequires:  /usr/bin/2to3
 
 %global _description\
 Beautiful Soup is a Python HTML/XML parser designed for quick\