diff --git a/.travis.yml b/.travis.yml
index 725c58d..470558f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,4 +16,5 @@ install:
 # command to run tests
 script: nosetests --with-coverage --cover-package=voluptuous
 after_success:
-  - coveralls
\ No newline at end of file
+  - coveralls
+  - 'if [ "$TRAVIS_PULL_REQUEST" = "false" ]; then bash ./update_documentation.sh; fi'
\ No newline at end of file
diff --git a/update_documentation.sh b/update_documentation.sh
new file mode 100644
index 0000000..d27b5b8
--- /dev/null
+++ b/update_documentation.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+git checkout gh-pages
+git merge master
+pip install -r requirements.txt
+sphinx-apidoc -o  docs -f voluptuous
\ No newline at end of file