diff --git a/shard.yml b/shard.yml
index 7aa40fd..4feb5e6 100644
--- a/shard.yml
+++ b/shard.yml
@@ -10,6 +10,7 @@ description: |
 
 dependencies:
   cbor:
+    branch: master
     git: https://git.baguette.netlib.re/Baguette/crystal-cbor
 
 license: MIT