diff --git a/Gemfile.lock b/Gemfile.lock
index 8190f6bb..ceed862b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,6 +109,8 @@ GEM
     nio4r (2.5.7)
     nokogiri (1.11.2-x86_64-darwin)
       racc (~> 1.4)
+    nokogiri (1.11.2-x86_64-linux)
+      racc (~> 1.4)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -119,7 +121,7 @@ GEM
     puma (4.3.5)
       nio4r (~> 2.0)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.5)
@@ -199,6 +201,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-19
+  x86_64-linux
 
 DEPENDENCIES
   bcrypt (= 3.1.13)