diff --git a/Gemfile.lock b/Gemfile.lock
index 0c52fcd..f3534f9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,9 +9,11 @@ GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.3)
-    mini_portile2 (2.3.0)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    mini_portile2 (2.5.1)
+    nokogiri (1.11.5)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    racc (1.5.2)
     rack (2.0.4)
     rake (10.5.0)
     rspec (3.7.0)