diff --git a/README.md b/README.md
index b17f004..d7e3dee 100644
--- a/README.md
+++ b/README.md
@@ -49,8 +49,9 @@ options are:
 2. `git`
 3. `chrome`
 4. `node`
-5. `phantomjs`
-6. `postgres`
+5. `yarn`
+6. `phantomjs`
+7. `postgres`
 
 ### Adding a new build
 
@@ -59,3 +60,14 @@ the name would be `ruby-2.4-golang-1.9-git-2.14`.
 
 1. Add a test task: `ruby-2.4-golang-1.9-git-2.14 test: *test_custom`
 1. Add a new build task: `ruby-2.4-golang-1.9-git-2.14: *build_and_deploy_custom`
+
+# Note regarding Google Chrome
+
+Google has a policy of yanking older versions of Google Chrome from their PPA whenever a new major
+version is released.  This means images with non-current chrome versions will fail to build.  Until
+a better solution is worked out, we will remove images based on older Chrome versions from the build
+process, but preserve them for reference within a comment in the `.gitlab-ci.yml` file.
+
+These images will persist in the docker repository for legacy use, but will no longer be recompiled.
+If an update ever needs to be made to an image containing an older version of Chrome, a workaround
+can be modeled after https://gitlab.com/gitlab-org/gitlab-build-images/merge_requests/54