diff --git a/Gemfile.lock b/Gemfile.lock
index ce4063d..412ecf7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,9 +27,10 @@ GEM
       tzinfo (~> 0.3.37)
     arel (4.0.0)
     atomic (1.1.9)
-    better_errors (0.9.0)
+    better_errors (2.8.0)
       coderay (>= 1.0.0)
-      erubis (>= 2.6.6)
+      erubi (>= 1.0.0)
+      rack (>= 0.9.0)
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
     builder (3.1.4)
@@ -54,6 +55,7 @@ GEM
     dotenv (0.8.0)
     dotenv-rails (0.8.0)
       dotenv (= 0.8.0)
+    erubi (1.10.0)
     erubis (2.7.0)
     execjs (1.4.0)
       multi_json (~> 1.0)