diff --git a/index.md b/index.md
index 153482d..fa4598e 100644
--- a/index.md
+++ b/index.md
@@ -45,6 +45,7 @@ In addition to those I cited, here are other resources I find useful.
 ### Vocabulary
 
 * [Jisho](https://jisho.org/), an online dictionary
+* [Tatoeba](https://tatoeba.org), for its sentences database
 * [Tangorin](https://tangorin.com/sentences), for its sentences database
 
 ## Any errors?