diff --git a/Gemfile.lock b/Gemfile.lock
index 621bead..6842abf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -103,7 +103,9 @@ GEM
     minitest (5.14.4)
     msgpack (1.4.2)
     nio4r (2.5.8)
-    nokogiri (1.12.5-x86_64-darwin)
+    nokogiri (1.13.9-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.13.9-x86_64-linux)
       racc (~> 1.4)
     pry (0.14.1)
       coderay (~> 1.1)
@@ -111,7 +113,7 @@ GEM
     public_suffix (4.0.6)
     puma (4.3.8)
       nio4r (~> 2.0)
-    racc (1.5.2)
+    racc (1.6.0)
     rack (2.2.3)
     rack-proxy (0.7.0)
       rack
@@ -221,6 +223,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-18
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap (>= 1.4.2)