diff --git a/lib/os.rb b/lib/os.rb
index 793ceb0..f859a76 100644
--- a/lib/os.rb
+++ b/lib/os.rb
@@ -176,11 +176,12 @@ def self.bsd?
     end
 
     def self.windows?
-      ENV['OS'] == 'Windows_NT'
+      # Windows 10 WSL kernel versions are custom to Microsoft
+      ENV['OS'] == 'Windows_NT' || !(`uname -r` =~ /Microsoft/).nil?
     end
 
     def self.linux?
-      OS.host_os =~ /linux/ ? true : false
+      !windows? && OS.host_os =~ /linux/ ? true : false
     end
 
   end