diff --git a/thulac/character/CBTaggingDecoder.py b/thulac/character/CBTaggingDecoder.py
index 11fc336..c240993 100644
--- a/thulac/character/CBTaggingDecoder.py
+++ b/thulac/character/CBTaggingDecoder.py
@@ -167,7 +167,7 @@ def segmentTag(self, raw, graph):
                 self.allowedLabelLists[i] = self.pocsToTags[15]
         self.sequence = raw
         self.len = len(raw)
-        start = time.clock()
+        start = time.process_time()
         self.putValues()
         self.dp()