diff --git a/.gitignore b/.gitignore
index e5a2509..2223f29 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ coverage/
 node_modules/
 nlcst-affix-emoticon-modifier.js
 nlcst-affix-emoticon-modifier.min.js
+yarn.lock