diff --git a/ChangeLog.md b/ChangeLog.md
index 03372a3..d652c4e 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,11 @@
 # NodeJieba ChangeLog
 
+## v2.4.1
+
++ upgrade deps/limonp -> v0.6.3
++ upgrade deps/cppjieba -> v5.0.3
++ merged [pull request 148](https://github.com/yanyiwu/nodejieba/pull/148)
+
 ## v2.4.0
 
 + revert commit-6600629 to be compatiable with cppjieba.
diff --git a/deps/limonp/StdExtension.hpp b/deps/limonp/StdExtension.hpp
index e662172..cf00e94 100644
--- a/deps/limonp/StdExtension.hpp
+++ b/deps/limonp/StdExtension.hpp
@@ -29,8 +29,6 @@ using std::tr1::unordered_set;
 #include <fstream>
 #include <sstream>
 
-#define print(x) std::cout << x << std::endl
-
 namespace std {
 
 template<typename T>