diff --git a/modulesync.gemspec b/modulesync.gemspec
index 5d5c1a0..6b72847 100644
--- a/modulesync.gemspec
+++ b/modulesync.gemspec
@@ -26,7 +26,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'voxpupuli-rubocop', '~> 2.8.0'
 
   spec.add_runtime_dependency 'git', '~>1.7'
-  spec.add_runtime_dependency 'gitlab', '~>4.0'
+  spec.add_runtime_dependency 'gitlab', '>=4', '<6'
   spec.add_runtime_dependency 'octokit', '>=4', '<9'
   spec.add_runtime_dependency 'puppet-blacksmith', '>= 3.0', '< 8'
   spec.add_runtime_dependency 'thor', '1.3.0'