diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index ef4bb86..487e7bf 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 3.1.4
+current_version = 3.1.5
 commit = True
 tag = True
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(-(?P<stage>[^.]*)\.(?P<devnum>\d+))?
diff --git a/README.rst b/README.rst
index 8a11508..e217f9c 100644
--- a/README.rst
+++ b/README.rst
@@ -1,5 +1,7 @@
+===================
 TRON API for Python
-=====
+===================
+
 A Python API for interacting with the Tron (TRX)
 
 .. image:: https://img.shields.io/pypi/v/tronapi.svg
@@ -47,8 +49,8 @@ Usage
 Specify the API endpoints:
 
 
-Example Smart Contract
--------
+Smart Contract
+--------------
 
 .. code-block:: python
 
@@ -102,7 +104,7 @@ Example Smart Contract
 ..
 
 Base Example
--------
+------------
 
 .. code-block:: python
     
diff --git a/setup.py b/setup.py
index a34547c..6471cc3 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
 
 py_version = platform.python_version()
 
-PACKAGE_VERSION = '3.1.4'
+PACKAGE_VERSION = '3.1.5'
 
 EXTRAS_REQUIRE = {
     'tester': [
@@ -48,7 +48,7 @@
         "toposort>=1.4",
         "urllib3",
         "tronapi",
-        "wheel"
+        "wheel >= 0.31.0"
     ],
 
     'dev': [
@@ -60,8 +60,9 @@
         "pytest-pythonpath>=0.3",
         "pytest-watch==4.*",
         "pytest-xdist==1.*",
-        "setuptools>=36.2.0",
+        "setuptools>=38.6.0",
         "tox>=1.8.0",
+        "twine >= 1.11.0",
         "tqdm",
         "when-changed"
     ]
@@ -105,6 +106,7 @@
     version=PACKAGE_VERSION,
     description='A Python API for interacting with Tron (TRX)',
     long_description=PACKAGE_LONG_DESCRIPTION,
+    long_description_content_type='text/x-rst',
     keywords='tron tron-api tron-api-python iexbase',
     url='https://github.com/iexbase/tron-api-python',
     author='Shamsudin Serderov',
diff --git a/tronapi/trx.py b/tronapi/trx.py
index c8ea0df..734b3e6 100644
--- a/tronapi/trx.py
+++ b/tronapi/trx.py
@@ -648,6 +648,7 @@ def verify_message(self, message, signed_message=None, address=None, use_tron: b
         # Determine which header to attach to the message
         # before encrypting or decrypting
         header = TRX_MESSAGE_HEADER if use_tron else ETH_MESSAGE_HEADER
+        header += str(len(message))
 
         message_hash = self.tron.keccak(text=header+message)
         recovered = Account.recover_hash(self.tron.toHex(message_hash), signed_message.signature)