diff --git a/Gemfile.lock b/Gemfile.lock
index 0dc8519..92e72c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -169,7 +169,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     mimemagic (0.3.2)
-    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)
@@ -185,8 +185,9 @@ GEM
       net-ssh (>= 2.6.5)
     net-ssh (4.1.0)
     nio4r (2.1.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
+    nokogiri (1.11.1)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -196,6 +197,7 @@ GEM
       slop (~> 3.4)
     public_suffix (2.0.5)
     puma (3.9.1)
+    racc (1.5.2)
     rack (2.0.3)
     rack-contrib (1.2.0)
       rack (>= 0.9.1)