diff --git a/docs/section-6-playground.html b/docs/section-6-playground.html
index 03c1395f..93d68867 100644
--- a/docs/section-6-playground.html
+++ b/docs/section-6-playground.html
@@ -23,7 +23,9 @@ permalink: playground
   <option value="python">Python</option>
   <option value="ruby">Ruby</option>
   <option value="rust">Rust</option>
+  <option value="toml">TOML</option>
   <option value="typescript">TypeScript</option>
+  <option value="yaml">YAML</option>
 </select>
 
 <input id="logging-checkbox" type="checkbox"></input>