diff --git a/Gemfile.lock b/Gemfile.lock
index ecdca52..65d67ad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.0)
-    daemons (1.2.6)
+    daemons (1.4.0)
     eventmachine (1.2.7)
     foreman (0.85.0)
       thor (~> 0.19.1)
@@ -16,7 +16,7 @@ GEM
       pg (~> 0)
     powerpack (0.1.2)
     psych (3.1.0)
-    rack (2.0.6)
+    rack (2.2.3)
     rack-protection (2.0.5)
       rack
     rainbow (3.0.0)
@@ -39,7 +39,7 @@ GEM
     slack-notifier (1.5.1)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
-    thin (1.7.2)
+    thin (1.8.1)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)