diff --git a/Gemfile.lock b/Gemfile.lock
index 89aa0f2..c2b0e92 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,7 +61,7 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.2.0)
+    mini_portile2 (2.5.0)
     minitest (5.10.2)
     mongo (2.4.2)
       bson (>= 4.2.1, < 5.0.0)
@@ -72,8 +72,9 @@ GEM
       tzinfo (>= 0.3.37)
     multi_json (1.12.1)
     multi_xml (0.6.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
+    nokogiri (1.11.2)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     origin (2.3.1)
     pg (0.20.0)
     pry (0.10.4)
@@ -86,6 +87,7 @@ GEM
     pry-rails (0.3.6)
       pry (>= 0.10.4)
     puma (3.9.1)
+    racc (1.5.2)
     rack (1.6.13)
     rack-cors (0.4.1)
     rack-test (0.6.3)