diff --git a/README.md b/README.md
index 90a55b2a61..59ba6cffff 100644
--- a/README.md
+++ b/README.md
@@ -105,7 +105,7 @@ npm install.  Ensure your system has [libcairo](http://cairographics.org/)
 installed and then run the following commands:
 
 * `npm install`
-* `npm install nomnoml`
+* `npm install canvas nomnoml`
 * `npm run docs`
 
 Documentation will be generated in `target/docs`.
diff --git a/circle.yml b/circle.yml
index 36f4abf604..eb88167f53 100644
--- a/circle.yml
+++ b/circle.yml
@@ -2,7 +2,7 @@ deployment:
   production:
     branch: master
     commands:
-      - npm install nomnoml
+      - npm install canvas nomnoml
       - ./build-docs.sh
       - git push git@heroku.com:openmctweb-demo.git $CIRCLE_SHA1:refs/heads/master
   openmctweb-staging-un: