diff --git a/teamocil.gemspec b/teamocil.gemspec
index 6111886..6751a22 100644
--- a/teamocil.gemspec
+++ b/teamocil.gemspec
@@ -7,7 +7,7 @@ spec = Gem::Specification.new do |s|
   s.homepage     = "http://github.com/remiprev/teamocil"
   s.summary      = "Easy window and split layouts for tmux"
   s.description  = "Teamocil helps you set up window and splits layouts for tmux using YAML configuration files."
-  s.files        = Dir["lib/**/*.rb", "README.mkd", "LICENSE", "bin/*", "spec/**/*.rb"]
+  s.files        = Dir["lib/**/*.rb", "README.md", "LICENSE", "bin/*", "spec/**/*.rb"]
   s.require_path = "lib"
   s.executables << "teamocil"