diff --git a/build-github.zsh b/build-github.zsh
new file mode 100755
index 0000000..a17f754
--- /dev/null
+++ b/build-github.zsh
@@ -0,0 +1,30 @@
+#!/bin/zsh
+
+# Should be run from the docs directory: (cd docs && ./build-github.zsh)
+
+REPO=$(dirname $(pwd))
+GH=_gh-pages
+
+
+# Checkout the gh-pages branch, if necessary.
+if [[ ! -d $GH ]]; then
+    git clone $REPO $GH
+    pushd $GH
+    git checkout -b gh-pages origin/gh-pages
+    popd
+fi
+
+# Update and clean out the _gh-pages target dir.
+pushd $GH && git pull && rm -rf * && popd
+
+# Make a clean build.
+make clean dirhtml
+
+# Move the fresh build over.
+cp -r _build/dirhtml/* $GH
+cd $GH
+
+# Commit.
+git add .
+git commit -am "gh-pages build on $(date)"
+git push origin gh-pages
diff --git a/docs.rst b/docs.rst
index fb4ca03..82f6b57 100644
--- a/docs.rst
+++ b/docs.rst
@@ -70,4 +70,12 @@ Here's a nice macro for creating headings::
 Compiling Documentation
 -----------------------
 
-Playdoh hosts its documentation on github pages. 
+Playdoh hosts its documentation on `github pages
+<http://mozilla.github.com/playdoh/>`_. When you change the docs, make sure
+they still build properly and look all right locally::
+
+    cd docs && make html && open _build/html/index.html
+
+If they do, run a build and push it to gh-pages::
+
+    ./build-github.zsh