diff --git a/AUTHORS.rst b/AUTHORS.rst
index 1090d2f03..cf1883228 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -20,7 +20,7 @@ Leads
 - `@szuckerman <https://github.com/szuckerman>`_ | `contributions <https://github.com/ericmjl/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Aszuckerman>`_
 - `@zbarry <https://github.com/zbarry>`_ | `contributions <https://github.com/ericmjl/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Azbarry>`_
     - Co-led sprint at SciPy 2019.
-- `@HectorM14 <https://github.com/HectorM14>`_ | `contributions <https://github.com/ericmjl/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3AHectorM14>`_
+- `@hectormz <https://github.com/hectormz>`_ | `contributions <https://github.com/ericmjl/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Ahectormz>`_
 - `@jk3587 <https://github.com/jk3587>`_ | `contributions <https://github.com/ericmjl/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Ajk3587>`_
     - Tagged issues at SciPy 2019.
 - `@sallyhong <https://github.com/sallyhong>`_ | `contributions <https://github.com/ericmjl/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Asallyhong>`_
@@ -76,4 +76,3 @@ Contributors
 - `@puruckertom <https://github.com/puruckertom>`_ | `contributions <https://github.com/ericmjl/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Apr+author%3Apuruckertom>`_
 - `@thomasjpfan <https://github.com/thomasjpfan>`_ | `contributions <https://github.com/ericmjl/pyjanitor/issues?q=is%3Aclosed+mentions%3Athomasjpfan>`_
 - `@jiafengkevinchen <https://github.com/jiafengkevinchen>`_ | `contributions <https://github.com/ericmjl/pyjanitor/pull/480#issue-298730562>`_
-
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index c358a4755..f9facd531 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -228,6 +228,11 @@ and append bin/python to the end of the path.
 
 Click OK and you should be good to go!
 
+Code Compatibility
+------------------
+
+pyjanitor supports Python 3.6+, so all contributed code must maintain this compatibility.
+
 
 Pull Request Guidelines
 -----------------------
diff --git a/README.rst b/README.rst
index 6f75e1f91..368490aea 100644
--- a/README.rst
+++ b/README.rst
@@ -143,6 +143,8 @@ Installation
 
     conda install pyjanitor -c conda-forge
 
+``pyjanitor`` requires Python 3.6+.
+
 Functionality
 -------------
 
diff --git a/pyproject.toml b/pyproject.toml
index f21de5254..7ef69bef7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.black]
 line-length = 79
-py36 = true
+target-version = ['py36', 'py37']
 include = '\.pyi?$'
 exclude = '''
 /(
diff --git a/setup.py b/setup.py
index eec6e8012..e7f2c1e84 100644
--- a/setup.py
+++ b/setup.py
@@ -15,4 +15,5 @@ def requirements():
     url="https://github.com/ericmjl/pyjanitor",
     packages=["janitor"],
     install_requires=requirements(),
+    python_requires=">=3.6",
 )