diff --git a/shard.yml b/shard.yml
index b34a636..d0038ce 100644
--- a/shard.yml
+++ b/shard.yml
@@ -6,7 +6,7 @@ description: |
 authors:
   - Michael Miller <icy.arctic.fox@gmail.com>
 
-crystal: 0.34.0
+crystal: 0.35.1
 
 license: MIT