diff --git a/Gemfile.lock b/Gemfile.lock
index cf6df45..18438a0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,6 +53,7 @@ GEM
     coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
     crass (1.0.3)
+    database_cleaner (1.8.5)
     devise (4.4.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
@@ -201,7 +202,7 @@ GEM
       railties (>= 5.0)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
+    websocket-extensions (0.1.5)
 
 PLATFORMS
   ruby
@@ -209,6 +210,7 @@ PLATFORMS
 DEPENDENCIES
   byebug
   coffee-rails (~> 4.2)
+  database_cleaner
   devise
   dotenv-rails
   factory_bot_rails