diff --git a/INSTALL.md b/INSTALL.md
index baec6d62c..b66814d26 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -28,6 +28,8 @@ On Ubuntu (we recommend 16.04), install the following:
 sudo apt-get install libgmp3-dev build-essential python2.7 python2.7-dev python-pip git python-virtualenv libssl-dev libffi-dev python-protobuf
 ```
 
+On Raspbian, you will also need to install `python-pyparsing`.
+
 If you're running another Linux flavor, install the equivalent of the above packages for your system.
 
 ### Windows Prerequisites