diff --git a/Gemfile.lock b/Gemfile.lock
index b3e1ca0..22063b8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,8 +13,8 @@ GEM
     concurrent-ruby (1.0.4)
     ethon (0.10.1)
       ffi (>= 1.3.0)
-    ffi (1.9.17)
-    ffi (1.9.17-x64-mingw32)
+    ffi (1.11.3)
+    ffi (1.11.3-x64-mingw32)
     forwardable-extended (2.6.0)
     html-proofer (3.4.0)
       activesupport (>= 4.2, < 6.0)
@@ -47,12 +47,12 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     mercenary (0.3.6)
-    mini_portile2 (2.1.0)
+    mini_portile2 (2.4.0)
     minitest (5.10.1)
-    nokogiri (1.8.1)
-      mini_portile2 (~> 2.3.0)
-    nokogiri (1.8.1-x64-mingw32)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.7)
+      mini_portile2 (~> 2.4.0)
+    nokogiri (1.10.7-x64-mingw32)
+      mini_portile2 (~> 2.4.0)
     parallel (1.10.0)
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)