diff --git a/cmake/Modules/GrPython.cmake b/cmake/Modules/GrPython.cmake
index efdddf3..f2d7d64 100644
--- a/cmake/Modules/GrPython.cmake
+++ b/cmake/Modules/GrPython.cmake
@@ -36,7 +36,7 @@ if(PYTHON_EXECUTABLE)
 else(PYTHON_EXECUTABLE)
 
     #use the built-in find script
-    find_package(PythonInterp)
+    find_package(PythonInterp 2)
 
     #and if that fails use the find program routine
     if(NOT PYTHONINTERP_FOUND)
diff --git a/cmake/Modules/GrSwig.cmake b/cmake/Modules/GrSwig.cmake
index 6ba5ee3..569667b 100644
--- a/cmake/Modules/GrSwig.cmake
+++ b/cmake/Modules/GrSwig.cmake
@@ -114,7 +114,7 @@ macro(GR_SWIG_MAKE name)
     endif()
 
     #append additional include directories
-    find_package(PythonLibs)
+    find_package(PythonLibs 2)
     list(APPEND GR_SWIG_INCLUDE_DIRS ${PYTHON_INCLUDE_PATH}) #deprecated name (now dirs)
     list(APPEND GR_SWIG_INCLUDE_DIRS ${PYTHON_INCLUDE_DIRS})
     list(APPEND GR_SWIG_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR})
diff --git a/swig/CMakeLists.txt b/swig/CMakeLists.txt
index 0a439bc..bf85355 100644
--- a/swig/CMakeLists.txt
+++ b/swig/CMakeLists.txt
@@ -21,7 +21,7 @@
 # Include swig generation macros
 ########################################################################
 find_package(SWIG)
-find_package(PythonLibs)
+find_package(PythonLibs 2)
 if(NOT SWIG_FOUND OR NOT PYTHONLIBS_FOUND)
     return()
 endif()