diff --git a/Gemfile.lock b/Gemfile.lock
index 5833c5a..729b253 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -37,10 +37,12 @@ GEM
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     method_source (0.9.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.3)
     minitest (5.11.3)
-    nokogiri (1.9.1)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.7)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    racc (1.5.2)
     rack (2.1.4)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)