diff --git a/Gemfile.lock b/Gemfile.lock
index 82ea95c..16f2461 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,12 +9,14 @@ GEM
     coderay (1.1.2)
     diff-lcs (1.3)
     method_source (0.9.0)
-    mini_portile2 (2.3.0)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    mini_portile2 (2.5.0)
+    nokogiri (1.11.0)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
+    racc (1.5.2)
     rake (10.4.2)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)