diff --git a/lib/carbon/routers.py b/lib/carbon/routers.py
index d1c47b7..1a70d7e 100644
--- a/lib/carbon/routers.py
+++ b/lib/carbon/routers.py
@@ -1,4 +1,4 @@
-import imp
+import importlib.util
 from carbon.hashing import ConsistentHashRing, carbonHash
 from carbon.util import PluginRegistrar
 from six import with_metaclass
@@ -130,9 +130,8 @@ class ConsistentHashingRouter(DatapointRouter):
 
   def setKeyFunctionFromModule(self, keyfunc_spec):
     module_path, func_name = keyfunc_spec.rsplit(':', 1)
-    module_file = open(module_path, 'U')
-    description = ('.py', 'U', imp.PY_SOURCE)
-    module = imp.load_module('keyfunc_module', module_file, module_path, description)
+    spec = importlib.util.spec_from_file_location("keyfunc_module", module_path)
+    module = importlib.util.module_from_spec(spec)
     keyfunc = getattr(module, func_name)
     self.setKeyFunction(keyfunc)