diff --git a/shard.yml b/shard.yml
index 7911c7925..e5f7a79f5 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: lucky
-version: 1.0.0.rc1
+version: 1.0.0-rc1
 
 crystal: ">=1.4.0"