diff --git a/sebak_for_exchanges.md b/sebak_for_exchanges.md
index 7b99c4f..2cd31eb 100644
--- a/sebak_for_exchanges.md
+++ b/sebak_for_exchanges.md
@@ -55,7 +55,7 @@ You can check [Sebak API document contents](https://bosnet.github.io/docs/api).
 * The structure of transaction, you can check in [API doc for Post Transaction](https://bosnet.github.io/docs/api/#trasactions-transactions-post).
 * BOScoin devteam is still developing the official SDK for various language and environments. At this time, you can use these,
 
-    - [sebakjs-util](https://github.com/bosnet/sebakjs-util): Javascript library
+    - [sebakjs-sdk](https://github.com/bosnet/sebakjs-sdk): Javascript library
     - [sebakpy-util](https://github.com/spikeekips/sebakpy-util): Python library
     - [sebakjava-util](https://github.com/MegaSolar/sebakJ-util): Java library for sebak
 	- [sebakGo-util](https://github.com/soonkuk/sebak-sdk-go): Go library for sebak
diff --git a/sebak_testnet.md b/sebak_testnet.md
index 735123d..9da56ea 100644
--- a/sebak_testnet.md
+++ b/sebak_testnet.md
@@ -33,8 +33,8 @@ When you send a transaction, creating an account or sending a payment, *Testnet*
 | -- |
 | http://testnet-sebak.blockchainos.org| 
 
-> ## Python SDK for sebak is here ; [sebak-pyutil](https://github.com/spikeekips/sebakpy-util)
-> ## Javascript SDK for sebak is here ; [sebak-jsutil](https://github.com/bosnet/sebakjs-util)
+> ## Python SDK for sebak is here ; [sebakpy-util](https://github.com/spikeekips/sebakpy-util)
+> ## Javascript SDK for sebak is here ; [sebakjs-util](https://github.com/bosnet/sebakjs-sdk)
 > ## Creating accounts should use tool, [sebak-angelbot](https://github.com/spikeekips/sebak-angelbot).
 > ## Sebak API documents is here ; [API docs](https://bosnet.github.io/docs/api/).
 
diff --git a/simple-guide-for-sebak-migration.md b/simple-guide-for-sebak-migration.md
index aaae647..f77a10c 100644
--- a/simple-guide-for-sebak-migration.md
+++ b/simple-guide-for-sebak-migration.md
@@ -25,7 +25,7 @@ So We,BOScoin dev team, **stronly recommend** to test in your local enviroment.
 
 At the moment, BOScoin dev team provide SDKs in Python and Javascript. Please check below repositories. 
 
-[sebakjs-util](https://github.com/bosnet/sebakjs-util): Sebak SDK in Javascript
+[sebakjs-sdk](https://github.com/bosnet/sebakjs-sdk): Sebak SDK in Javascript
 
 [sebakpy-util](https://github.com/spikeekips/sebakpy-util): Sebak SDK in Python