diff --git a/fastjet.spec b/fastjet.spec
index 785bde14bc8..0fc383b9d42 100644
--- a/fastjet.spec
+++ b/fastjet.spec
@@ -31,6 +31,7 @@ esac
   --enable-siscone \
   --prefix=%{i} \
   --enable-allcxxplugins \
+  --enable-pyext \
   CXXFLAGS="$CXXFLAGS"
 
 %build