diff --git a/Gemfile b/Gemfile
index d9b9af6..aef747c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,4 +4,4 @@ ruby File.read(".ruby-version").strip
 
 gem 'celluloid', '0.17.3'
 gem 'multi_json', '1.13.1'
-gem 'nokogiri', '~> 1.11.1'
+gem 'nokogiri', '~> 1.13.9'
diff --git a/Gemfile.lock b/Gemfile.lock
index de33c22..1148363 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,12 +19,12 @@ GEM
     celluloid-supervision (0.20.6)
       timers (>= 4.1.1)
     hitimes (1.2.6)
-    mini_portile2 (2.5.0)
+    mini_portile2 (2.8.0)
     multi_json (1.13.1)
-    nokogiri (1.11.1)
-      mini_portile2 (~> 2.5.0)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    racc (1.5.2)
+    racc (1.6.0)
     timers (4.1.2)
       hitimes
 
@@ -34,7 +34,7 @@ PLATFORMS
 DEPENDENCIES
   celluloid (= 0.17.3)
   multi_json (= 1.13.1)
-  nokogiri (~> 1.11.1)
+  nokogiri (~> 1.13.9)
 
 RUBY VERSION
    ruby 2.6.5p114