diff --git a/src/icons/partials/fileExtensions.js b/src/icons/partials/fileExtensions.js
index 677f6dd..08d337a 100644
--- a/src/icons/partials/fileExtensions.js
+++ b/src/icons/partials/fileExtensions.js
@@ -200,6 +200,7 @@
   "lib": "_file_lib",
   "rb": "_file_ruby",
   "erb": "_file_ruby",
+  "lock": "_file_ruby",
   "fs": "_file_fsharp",
   "fsx": "_file_fsharp",
   "fsi": "_file_fsharp",