diff --git a/Gemfile.lock b/Gemfile.lock
index 162678f..77ade3a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -145,9 +145,10 @@ GEM
     net-smtp (0.3.3)
       net-protocol
     nio4r (2.5.8)
-      racc (~> 1.4)
     nokogiri (1.14.0-x86_64-darwin)
       racc (~> 1.4)
+    nokogiri (1.14.0-x86_64-linux)
+      racc (~> 1.4)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -160,7 +161,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (6.1.3.2)
@@ -270,6 +271,7 @@ GEM
 PLATFORMS
   x86_64-darwin-19
   x86_64-darwin-20
+  x86_64-linux
 
 DEPENDENCIES
   coveralls