--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,10 +7,7 @@ INCLUDE(version)
 
 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
 
-FIND_PACKAGE(PythonInterp 2 REQUIRED)
-IF (NOT PYTHON_VERSION_MAJOR EQUAL 2)
-  MESSAGE(FATAL_ERROR "Python 2 is required.")
-ENDIF()
+FIND_PACKAGE(PythonInterp 3 REQUIRED)
 
 FIND_PROGRAM(CTYPESGEN_FOUND ctypesgen.py)