diff --git a/Gemfile.lock b/Gemfile.lock
index ee77d6fc..4fa1845f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -50,7 +50,7 @@ GEM
     autoprefixer-rails (8.5.0)
       execjs
     bcrypt (3.1.11)
-    better_errors (2.4.0)
+    better_errors (2.8.0)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
@@ -74,7 +74,7 @@ GEM
     chromedriver-helper (1.2.0)
       archive-zip (~> 0.10)
       nokogiri (~> 1.8)
-    coderay (1.1.2)
+    coderay (1.1.3)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
@@ -90,7 +90,7 @@ GEM
       railties (>= 4.1.0, < 6.0)
       responders
       warden (~> 1.2.3)
-    erubi (1.7.1)
+    erubi (1.10.0)
     execjs (2.7.0)
     ffi (1.9.23)
     globalid (0.4.1)
@@ -118,7 +118,9 @@ GEM
     marcel (0.3.2)
       mimemagic (~> 0.3.2)
     method_source (0.9.0)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
@@ -130,7 +132,7 @@ GEM
     orm_adapter (0.5.0)
     public_suffix (3.0.2)
     puma (3.11.4)
-    rack (2.0.5)
+    rack (2.2.3)
     rack-test (1.0.0)
       rack (>= 1.0, < 3)
     rails (5.2.0)
@@ -192,9 +194,6 @@ GEM
     thor (0.20.0)
     thread_safe (0.3.6)
     tilt (2.0.8)
-    turbolinks (5.1.1)
-      turbolinks-source (~> 5.1)
-    turbolinks-source (5.1.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
     uglifier (4.1.10)
@@ -234,7 +233,6 @@ DEPENDENCIES
   sass-rails (~> 5.0)
   selenium-webdriver
   sqlite3
-  turbolinks (~> 5)
   tzinfo-data
   uglifier (>= 1.3.0)
   web-console (>= 3.3.0)