diff --git a/README.md b/README.md
index fa4a731..1f6bdb9 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ To build Coz from source, you will need:
 
 - A copy of the source code for this project
 - A compiler with C++0x support (clang++ or g++)
-- A Python 3 interpreter (Python 2.7 isn't supported)
+- A Python interpreter (python 3 is recommended)
 - The libelfin development libraries
 - The `rst2man` command (for building documentation
 - NodeJS and npm (for building the profiler viewer)
diff --git a/coz b/coz
index aaa6646..9985955 100755
--- a/coz
+++ b/coz
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python2.7
 
 # Copyright (c) 2019, Charlie Curtsinger and Emery Berger,
 #                     University of Massachusetts Amherst