diff --git a/gem/Gemfile.lock b/gem/Gemfile.lock
index dbc905e..951b0c0 100644
--- a/gem/Gemfile.lock
+++ b/gem/Gemfile.lock
@@ -12,8 +12,8 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     dotenv (2.7.6)
@@ -34,7 +34,7 @@ GEM
     minitest (5.14.3)
     multi_json (1.15.0)
     nicetitle (1.0.2)
-    public_suffix (4.0.6)
+    public_suffix (5.0.0)
     rake (13.0.3)
     redcarpet (3.5.1)
     tilt (2.0.10)
@@ -44,6 +44,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-20
+  x86_64-linux
 
 DEPENDENCIES
   bundler (~> 2)