diff --git a/ChangeLog b/ChangeLog
index 2c391f1..dc71df4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+version 1.0.1
+	* fix an infinite loop when sending 0 byte object via binary protocol.
+	* improve binary protocol compatibility with memcached.
+	  Specifically, Delete/Append/Prepend/Increment/Decrement with CAS
+	  are supported now.
+	* improve flush logic of temporary files.
+	* fix some potential bugs: #23, #24
+
 version 1.0.0
 
 	* [security] MurmurHash was replaced with SipHash.
diff --git a/src/constants.hpp b/src/constants.hpp
index 7409e82..c74ca4d 100644
--- a/src/constants.hpp
+++ b/src/constants.hpp
@@ -29,7 +29,7 @@ const std::size_t   MAX_REQUEST_LENGTH  = 30 << 20; // 30 MiB
 const int           MAX_SLAVES          = 5;
 const int           MAX_CONSECUTIVE_GCS = 3;
 
-const char          VERSION[] = "yrmcds version 1.0.0";
+const char          VERSION[] = "yrmcds version 1.0.1";
 
 } // namespace yrmcds