diff --git a/shard.yml b/shard.yml
index c920bfe..9c0d3f5 100644
--- a/shard.yml
+++ b/shard.yml
@@ -14,4 +14,4 @@ license: MIT
 development_dependencies:
   ameba:
     github: crystal-ameba/ameba
-    version: 1.6.1
+    version: 1.6.4