diff --git a/Gemfile.lock b/Gemfile.lock
index f465ff7..9964444 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -85,8 +85,8 @@ GEM
     ffi (1.9.17)
     globalid (0.3.7)
       activesupport (>= 4.1.0)
-    i18n (0.8.0)
-    jbuilder (2.6.1)
+    i18n (0.8.1)
+    jbuilder (2.6.2)
       activesupport (>= 3.0.0, < 5.1)
       multi_json (~> 1.2)
     jquery-rails (4.2.2)
@@ -106,7 +106,7 @@ GEM
       kaminari-core (= 1.0.1)
     kaminari-core (1.0.1)
     kgio (2.11.0)
-    libv8 (3.16.14.17-x86_64-linux)
+    libv8 (3.16.14.17)
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -129,7 +129,7 @@ GEM
       mini_portile2 (~> 2.1.0)
     orm_adapter (0.5.0)
     pg (0.19.0)
-    puma (3.6.2)
+    puma (3.7.1)
     rack (2.0.1)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -159,7 +159,7 @@ GEM
     raindrops (0.17.0)
     rake (12.0.0)
     rb-fsevent (0.9.8)
-    rb-inotify (0.9.7)
+    rb-inotify (0.9.8)
       ffi (>= 0.5.0)
     ref (2.0.0)
     responders (2.3.0)
@@ -193,7 +193,7 @@ GEM
       libv8 (~> 3.16.14.15)
       ref
     thor (0.19.4)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (2.0.6)
     to_csv-rails (0.1.5)
     turbolinks (5.0.1)
@@ -213,7 +213,7 @@ GEM
       activemodel (>= 5.0)
       debug_inspector
       railties (>= 5.0)
-    websocket-driver (0.6.4)
+    websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.2)
 
@@ -238,6 +238,7 @@ DEPENDENCIES
   listen (~> 3.0.5)
   pg
   puma (~> 3.0)
+  rack (~> 2.0.0)
   rails (~> 5.0.0, >= 5.0.0.1)
   sass-rails (~> 5.0)
   simple_form