diff --git a/Gemfile.lock b/Gemfile.lock
index 0962f84..6cb8a80 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,10 +27,7 @@ GEM
     rack-ssl-enforcer (0.2.9)
     rack-test (2.1.0)
       rack (>= 1.3)
-    redis (5.0.7)
-      redis-client (>= 0.9.0)
-    redis-client (0.15.0)
-      connection_pool
+    redis (4.7.1)
     rexml (3.2.6)
     ruby2_keywords (0.0.5)
     secure_headers (6.5.0)