diff --git a/GeographicLib.spec b/GeographicLib.spec
index dcc354c..8ad9a0e 100644
--- a/GeographicLib.spec
+++ b/GeographicLib.spec
@@ -124,7 +124,8 @@ mkdir build; pushd build;
   -DCOMMON_INSTALL_PATH=ON \
   -DGEOGRAPHICLIB_DOCUMENTATION=ON \
   -DUSE_RPATH=OFF \
-  -DCMAKE_SKIP_INSTALL_RPATH=ON
+  -DCMAKE_SKIP_INSTALL_RPATH=ON \
+  -DPython_ADDITIONAL_VERSIONS=2
 %make_build
 popd