diff --git a/INSTALL.md b/INSTALL.md
index c3e23a9a5..015a13833 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -31,11 +31,11 @@ from there.
 # UNIX/Linux/BSD
 
 If you're installing Python using your distributor's packages, you may
-need a python-dev package installed, too.  If you don't have a
-'/usr/lib/python2.x/distutils' directory or
-'/usr/lib/python2.x/config/Makefile' (assuming '/usr/lib/python2.x' is
-where your Python libs are installed), then you will need a python-dev
-package.
+need a python-dev or python3-dev package installed, too.  If you don't have
+a '/usr/lib/python2.x/distutils' directory or 
+'/usr/lib/python2.x/config/Makefile' or with Python 3 
+'/usr/lib/python3.x/distutils' or '/usr/lib/python3.x/config/Makefile' (assuming '/usr/lib/python2.x' or '/usr/lib/python3.x' is where your Python 
+libs are installed), then you will need a python-dev or python3-dev package.
 
 First start by git cloning Limnoria and moving to the cloned repository.
 
@@ -54,6 +54,10 @@ Run
 python setup.py install
 ```
 
+```python``` can be replaced with ```python2``` (if your distribution 
+uses Python 3 by default) or ```python3``` if you want to use Python 3 
+version.
+
 Now you have several new programs installed where Python scripts are normally
 installed on your system ('/usr/bin' or '/usr/local/bin' are common on
 UNIX systems).  The two that might be of particular interest to you, the
@@ -70,6 +74,10 @@ Run
 python setup.py install --user
 ```
 
+```python``` can be replaced with ```python2``` (if your distribution 
+uses Python 3 by default) or ```python3``` if you want to use 
+Python 3 version.
+
 and you will have new programs installed in ~/.local/bin. The two that might be of particular interest to you, the
 new user, are 'supybot' and 'supybot-wizard'.  The former, 'supybot', is
 the script to run an actual bot; the latter, 'supybot-wizard', is an
@@ -96,6 +104,15 @@ and then install Limnoria normally. "python setup.py install" doesn't affect con
 
 If you don't have the cloned Limnoria repository, clone it again using the installation instructions.
 
+## Upgrading to Python 3
+
+Upgrading Python3 happens the same way, but if you want to move from 2 to 3 
+or 3 to 2, you must remove the build/ directory first.
+
+```
+rm -rf build/
+```
+
 # Windows
 
 **Note**: If you are using an IPV6 connection, you will not be able