diff --git a/.gitignore b/.gitignore
index bdd3ac142..9a8c8325f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 /dist
 /docs/_site
 /docs/.git-gh-pages
+fig.spec
diff --git a/README.md b/README.md
index 1918d9b39..de4bbc272 100644
--- a/README.md
+++ b/README.md
@@ -52,4 +52,10 @@ Running the test suite
 
     $ script/test
 
+Building OS X binaries
+---------------------
+
+    $ script/build-osx
+
+Note that this only works on Mountain Lion, not Mavericks, due to a [bug in PyInstaller](http://www.pyinstaller.org/ticket/807).
 
diff --git a/bin/fig b/bin/fig
new file mode 100755
index 000000000..550a5e243
--- /dev/null
+++ b/bin/fig
@@ -0,0 +1,3 @@
+#!/usr/bin/env python
+from fig.cli.main import main
+main()
diff --git a/script/build-osx b/script/build-osx
new file mode 100755
index 000000000..ee011d1b2
--- /dev/null
+++ b/script/build-osx
@@ -0,0 +1,6 @@
+#!/bin/bash
+set -ex
+virtualenv venv
+venv/bin/pip install pyinstaller==2.1
+venv/bin/pip install .
+venv/bin/pyinstaller -F bin/fig