diff --git a/Gemfile.lock b/Gemfile.lock
index cf6df45..0ef2e6c 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 (1.7.0)
     devise (4.4.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
@@ -101,7 +102,7 @@ GEM
       mini_portile2 (~> 2.3.0)
     orm_adapter (0.5.0)
     puma (3.11.2)
-    rack (2.0.3)
+    rack (2.0.8)
     rack-test (0.8.2)
       rack (>= 1.0, < 3)
     rails (5.1.4)
@@ -209,6 +210,7 @@ PLATFORMS
 DEPENDENCIES
   byebug
   coffee-rails (~> 4.2)
+  database_cleaner
   devise
   dotenv-rails
   factory_bot_rails