diff --git a/autoproj.gemspec b/autoproj.gemspec
index 13898743..5d9b491f 100644
--- a/autoproj.gemspec
+++ b/autoproj.gemspec
@@ -34,7 +34,7 @@ Gem::Specification.new do |s|
     s.add_runtime_dependency 'tty-prompt', '~> 0.15.0'
     s.add_runtime_dependency 'tty-spinner', '~> 0.8.0'
     s.add_runtime_dependency 'rb-inotify' if RbConfig::CONFIG['target_os'] =~ /linux/
-    s.add_runtime_dependency 'xdg'
+    s.add_runtime_dependency 'xdg', '= 2.2.5'
     s.add_development_dependency "flexmock", '~> 2.0', ">= 2.0.0"
     s.add_development_dependency "minitest", "~> 5.0", ">= 5.0"
     s.add_development_dependency "simplecov"