diff --git a/CHANGELOG.md b/CHANGELOG.md
index c62b7240..47f9a95a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+1.7.0
+-----
+
+* `aio_pika.patterns` submodule
+    * `aio_pika.patterns.RPC` - RPC pattern
+    * `aio_pika.patterns.Master` - Master/Worker pattern
+
 1.5.1
 -----
 
diff --git a/aio_pika/patterns/master.py b/aio_pika/patterns/master.py
index 80c9dd5d..308c205b 100644
--- a/aio_pika/patterns/master.py
+++ b/aio_pika/patterns/master.py
@@ -42,19 +42,17 @@ class Master(Base):
 
     __doc__ = """
     Implements Master/Worker pattern.
-
-    Usage example 
+    Usage example:
 
     `worker.py` ::
 
         master = Master(channel)
-        worker = await master.create_worker('test_worker', lambda x: print(x))        
+        worker = await master.create_worker('test_worker', lambda x: print(x))
 
     `master.py` ::
 
         master = Master(channel)
         await master.proxy.test_worker('foo')
-
     """
 
     def __init__(self, channel: Channel):
diff --git a/aio_pika/patterns/rpc.py b/aio_pika/patterns/rpc.py
index aa758354..c12be342 100644
--- a/aio_pika/patterns/rpc.py
+++ b/aio_pika/patterns/rpc.py
@@ -26,7 +26,7 @@ class RPC(Base):
 
     DLX_NAME = 'rpc.dlx'
 
-    __doc__ = """ 
+    __doc__ = """
     Remote Procedure Call helper.
 
     Create an instance ::