diff --git a/Gemfile.lock b/Gemfile.lock
index 831ca4d..ff29857 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,10 +16,11 @@ GEM
       rdf (>= 2.2.8, < 4.0)
     link_header (0.0.8)
     method_source (0.9.2)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.1)
     multi_json (1.13.1)
-    nokogiri (1.10.8)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.11.4)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     nokogumbo (2.0.1)
       nokogiri (~> 1.8, >= 1.8.4)
     parallel (1.12.1)
@@ -29,6 +30,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
+    racc (1.5.2)
     rainbow (3.0.0)
     rdf (3.0.7)
       hamster (~> 3.0)