diff --git a/Gemfile b/Gemfile
index 3e8b09b..2e137f8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,13 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 ruby '2.7.0'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '= 6.0.2.1'
+
+gem 'rails', '= 6.0.2.1', platforms: [:ruby]
+# TODO install rails on windows manually, nokogiri installation fails:
+# ridk exec pacman -S mingw-w64-x86_64-libxslt
+# gem install nokogiri --platform=ruby -- --use-system-libraries
+# gem rails -v 6.0.2.1
+
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.4'
 # Use Puma as the app server