diff --git a/shard.yml b/shard.yml
index 419357e..f39da96 100644
--- a/shard.yml
+++ b/shard.yml
@@ -8,6 +8,6 @@ description: |
 authors:
   - Joel <joel@neutrinographics.com>
 
-crystal: 0.34.0
+crystal: 0.35.0
 
 license: MIT