1 files changed, 1 insertions, 1 deletions
diff --git a/Gemfile b/Gemfile
index c3a40d179d..803e1115d5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -65,7 +65,7 @@ group(:linux, :bsd, :mac_os_x, :solaris, :windows) do
 end
 # Everything except AIX and Windows
 group(:linux, :bsd, :mac_os_x, :solaris) do
-  gem "ruby-shadow"
+  gem "ruby-shadow", platforms: :ruby
 end
 
 group(:development, :test) do