diff --git a/shard.yml b/shard.yml
index 9782be4..b832373 100755
--- a/shard.yml
+++ b/shard.yml
@@ -12,4 +12,6 @@ license: MIT
 
 dependencies:
   ydl_binaries:
-    github: cooperhammond/ydl-binaries
\ No newline at end of file
+    github: cooperhammond/ydl-binaries
+  json_mapping:
+    github: crystal-lang/json_mapping.cr