diff --git a/modulesync.gemspec b/modulesync.gemspec
index c7aa8ca..85c1ed3 100644
--- a/modulesync.gemspec
+++ b/modulesync.gemspec
@@ -27,5 +27,5 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency 'gitlab', '~>4.0'
   spec.add_runtime_dependency 'octokit', '>=4', '<9'
   spec.add_runtime_dependency 'puppet-blacksmith', '>= 3.0', '< 8'
-  spec.add_runtime_dependency 'thor'
+  spec.add_runtime_dependency 'thor', '1.3.0'
 end