diff --git a/shard.lock b/shard.lock
index f984b4a..29bd507 100644
--- a/shard.lock
+++ b/shard.lock
@@ -10,5 +10,5 @@ shards:
 
   redis:
     git: https://github.com/jgaskins/redis.git
-    version: 0.14.0
+    version: 0.15.1
 
diff --git a/shard.yml b/shard.yml
index a31595a..bf2d7fd 100644
--- a/shard.yml
+++ b/shard.yml
@@ -10,7 +10,7 @@ crystal: "1.0.0, < 2.0.0"
 dependencies:
   redis:
     github: jgaskins/redis
-    version: ~> 0.14.0
+    version: ~> 0.15.0
 
 development_dependencies:
   ameba:
diff --git a/src/defense/redis_store.cr b/src/defense/redis_store.cr
index 1049a4d..e4bcf0c 100644
--- a/src/defense/redis_store.cr
+++ b/src/defense/redis_store.cr
@@ -18,7 +18,7 @@ module Defense
       @redis.multi do |r|
         r.incr(key)
         r.expire(key, expires_in)
-      end.first.as(Int64)
+      end.as(Array).first.as(Int64)
     end
 
     def exists?(unprefixed_key : String) : Bool