diff --git a/shard.yml b/shard.yml
index d3ecbfa..417e2f6 100644
--- a/shard.yml
+++ b/shard.yml
@@ -18,6 +18,6 @@ targets:
   zipstream:
     main: src/zipstream_cli.cr
 
-crystal: 1.10.0
+crystal: 1.11.1
 
 license: MIT