diff --git a/requirements.txt b/requirements.txt
index ba8abde..cf26b3a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -41,7 +41,7 @@ toml==0.10.2
 tqdm==4.57.0
 twine==3.3.0
 typing-extensions==3.7.4.3
-urllib3==1.26.3
+urllib3==1.26.4
 webcolors==1.11.1
 webencodings==0.5.1
 websockets==8.1
diff --git a/upbit/__init__.py b/upbit/__init__.py
index 5b16c92..205d4ec 100644
--- a/upbit/__init__.py
+++ b/upbit/__init__.py
@@ -1,3 +1,16 @@
+"""
+[Upbit Client]
+
+Please read the official Upbit Client document.
+Documents: https://ujhin.github.io/upbit-client-docs/
+
+- Upbit OPEN API Version: 1.2.0
+- Author: ujhin
+- Email: ujhin942@gmail.com
+- GitHub: https://github.com/uJhin
+- Official OPEN API Documents: https://docs.upbit.com
+- Official Support Email: open-api@upbit.com
+"""
 
 from . import pkginfo
 
diff --git a/upbit/authentication.py b/upbit/authentication.py
index 1706185..d447d57 100644
--- a/upbit/authentication.py
+++ b/upbit/authentication.py
@@ -8,13 +8,8 @@
 from bravado.requests_client import Authenticator
 
 
-EXCHANGE_PARAMS  = ['uuids', 'txids', 'identifiers', 'states']
-QUOTATION_PARAMS = ['uuids', 'txids', 'identifiers',]
-QUERY_PARAMS     = set(EXCHANGE_PARAMS)
 MAPPER           = 'swg_mapper.json'
-
-
-QUERY_PARAMS.update(QUOTATION_PARAMS)
+QUERY_PARAMS     = ['uuids', 'txids', 'identifiers', 'states']
 
 
 class APIKeyAuthenticator(Authenticator):
diff --git a/upbit/pkginfo.py b/upbit/pkginfo.py
index 335863a..253c8e3 100644
--- a/upbit/pkginfo.py
+++ b/upbit/pkginfo.py
@@ -29,7 +29,7 @@ def _get_versions(package_name):
 PACKAGE_NAME     = 'upbit-client'
 
 OPEN_API_VERSION = '1.2.0'
-CURRENT_VERSION  = OPEN_API_VERSION+'.3'
+CURRENT_VERSION  = OPEN_API_VERSION+'.4'
 
 RELEASED_VERSION = _get_versions(PACKAGE_NAME)
 LATEST_VERSION   = RELEASED_VERSION[0]