diff --git a/Gemfile b/Gemfile
index ad5b085..7835d7d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,8 +2,13 @@
 
 source "https://rubygems.org"
 
-gem "jekyll-theme-chirpy", "~> 7.0", ">= 7.0.1"
+gem "jekyll-theme-chirpy", "~> 7.2", ">= 7.2.4"
 
-group :test do
-  gem "html-proofer", "~> 5.0"
+gem "html-proofer", "~> 5.0", group: :test
+
+platforms :mingw, :x64_mingw, :mswin, :jruby do
+  gem "tzinfo", ">= 1", "< 3"
+  gem "tzinfo-data"
 end
+
+gem "wdm", "~> 0.2.0", :platforms => [:mingw, :x64_mingw, :mswin]