diff --git a/shard.yml b/shard.yml
index 301f6c3f..a0528066 100644
--- a/shard.yml
+++ b/shard.yml
@@ -33,6 +33,7 @@ dependencies:
     version: ~> 0.1.1
   crotp:
     github: philnash/crotp
+    version: ~> 1.0.0
 
 development_dependencies:
   spectator: