--- python/CMakeLists.txt~	2016-05-20 01:53:12.000000000 -0500
+++ python/CMakeLists.txt	2016-06-14 14:07:30.001554507 -0500
@@ -12,8 +12,8 @@
       set ( SWIG_FOUND TRUE )
     endif ()
   endif ()
-  find_package ( PythonLibs )
-  find_package ( PythonInterp )
+  find_package ( PythonLibs 2.7 REQUIRED )
+  find_package ( PythonInterp 2.7 REQUIRED )
 endif ()
 
 if ( SWIG_FOUND AND PYTHONLIBS_FOUND AND PYTHONINTERP_FOUND )