diff --git a/_config.yml b/_config.yml
index 533d7a7..080aeb9 100644
--- a/_config.yml
+++ b/_config.yml
@@ -27,6 +27,7 @@ gems:
   - jekyll-feed
   - jemoji
   - jekyll-press
+  - therubyrunner
 
 # Homepage tiles
 tiles-source: posts # accepts "posts" or "pages"