1 files changed, 1 insertions, 1 deletions

diff --git a/shard.yml b/shard.yml
index 27d4133..c41f539 100644
--- a/shard.yml
+++ b/shard.yml
@@ -6,7 +6,7 @@ authors:
   - snapcase <snapcase@octalzeroes.com>
   - Zac Nowicki <zachnowicki@gmail.com>
 
-crystal: 0.21.1
+crystal: 0.28.0
 
 license: MIT