diff --git a/Gemfile.lock b/Gemfile.lock
index 7f1ef55..d7c486d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -72,7 +72,7 @@ GEM
       actionpack (>= 3.1)
       axlsx (>= 2.0.1)
     bcrypt (3.1.12)
-    better_errors (2.5.1)
+    better_errors (2.9.1)
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
@@ -97,7 +97,7 @@ GEM
       regexp_parser (~> 1.2)
       xpath (~> 3.2)
     chartkick (3.0.2)
-    coderay (1.1.2)
+    coderay (1.1.3)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
@@ -116,7 +116,7 @@ GEM
       responders
       warden (~> 1.2.3)
     diff-lcs (1.3)
-    erubi (1.8.0)
+    erubi (1.10.0)
     erubis (2.7.0)
     execjs (2.7.0)
     factory_girl (4.9.0)
@@ -192,7 +192,7 @@ GEM
     pg (1.1.4)
     public_suffix (3.0.3)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-pjax (1.1.0)
       nokogiri (~> 1.5)
       rack (>= 1.1)