diff --git a/README.md b/README.md
index 4b6f993..b43260f 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,7 @@ On Ubuntu, run:
 sudo apt install ruby ruby-dev make gcc
 sudo gem install jekyll bundler
 sudo gem install jekyll-seo-tag
+sudo gem install jekyll-sitemap
 ```
 
 **2. Run a local version of the website.** Using Git, clone the latest version of this repository
diff --git a/_config.yml b/_config.yml
index 23cc2cf..5350c6c 100644
--- a/_config.yml
+++ b/_config.yml
@@ -23,4 +23,5 @@ exclude:
 
 plugins:
   - jekyll-seo-tag
+  - jekyll-sitemap