diff --git a/Gemfile.lock b/Gemfile.lock
index 3167378..8a9f297 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -133,16 +133,18 @@ GEM
       mini_mime (>= 0.1.1)
     method_source (0.9.2)
     mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.5.1)
     minitest (5.11.3)
     multi_json (1.13.1)
     nio4r (2.3.1)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     orm_adapter (0.5.0)
     pg (0.21.0)
     public_suffix (3.0.3)
     puma (3.12.0)
+    racc (1.5.2)
     rack (2.0.6)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)