diff --git a/Gemfile.lock b/Gemfile.lock
index 471a758..51855ea 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -456,7 +456,7 @@ GEM
     mime-types-data (3.2016.0521)
     mini_magick (4.8.0)
     mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.5.3)
     minitest (5.11.3)
     multi_json (1.13.1)
     multi_xml (0.6.0)
@@ -470,8 +470,9 @@ GEM
     noid-rails (3.0.0)
       actionpack (>= 5.0.0, < 6)
       noid (~> 0.9)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.11.7)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     oauth (0.5.4)
     oauth2 (1.4.0)
       faraday (>= 0.8, < 0.13)
@@ -501,6 +502,7 @@ GEM
       nokogiri (~> 1.6)
       rails (~> 5.0)
       rdf
+    racc (1.5.2)
     rack (2.0.6)
     rack-protection (2.0.1)
       rack