diff --git a/Gemfile.lock b/Gemfile.lock
index c788909..999946a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
       activesupport (>= 3.1, < 4.1)
       haml (>= 3.1, < 4.1)
       railties (>= 3.1, < 4.1)
-    hike (1.2.1)
+    hike (1.2.3)
     i18n (0.6.1)
     journey (1.0.4)
     jquery-rails (2.2.1)
@@ -100,7 +100,7 @@ GEM
       treetop (~> 1.4.8)
     mime-types (1.22)
     mini_portile2 (2.4.0)
-    multi_json (1.7.2)
+    multi_json (1.14.1)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     nokogiri (1.10.8-x86-mingw32)
@@ -108,7 +108,7 @@ GEM
     pg (0.15.0)
     pg (0.15.0-x86-mingw32)
     polyglot (0.3.3)
-    rack (1.4.5)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-ssl (1.3.3)
@@ -155,7 +155,7 @@ GEM
       multi_json (~> 1.0)
       rubyzip
       websocket (~> 1.0.4)
-    sprockets (2.2.2)
+    sprockets (2.2.3)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)
@@ -163,7 +163,7 @@ GEM
     sqlite3 (1.3.7)
     sqlite3 (1.3.7-x86-mingw32)
     thor (0.18.1)
-    tilt (1.3.6)
+    tilt (1.4.1)
     treetop (1.4.12)
       polyglot
       polyglot (>= 0.3.1)