diff --git a/Gemfile.lock b/Gemfile.lock
index 8fc0de8..e0220bb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,18 +112,18 @@ GEM
     mime-types-data (3.2016.0521)
     mini_magick (4.8.0)
     mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.11.1)
     multi_json (1.13.1)
     mustermann (1.0.1)
     newrelic_rpm (4.7.1.340)
     nio4r (2.2.0)
-    nokogiri (1.8.1)
-      mini_portile2 (~> 2.3.0)
-    nokogiri (1.8.1-x64-mingw32)
-      mini_portile2 (~> 2.3.0)
-    nokogiri (1.8.1-x86-mingw32)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.9)
+      mini_portile2 (~> 2.4.0)
+    nokogiri (1.10.9-x64-mingw32)
+      mini_portile2 (~> 2.4.0)
+    nokogiri (1.10.9-x86-mingw32)
+      mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
     pdf-core (0.7.0)
     pg (0.19.0)