diff --git a/vmpooler-provider-vsphere.gemspec b/vmpooler-provider-vsphere.gemspec
index f40d43e..02561a9 100644
--- a/vmpooler-provider-vsphere.gemspec
+++ b/vmpooler-provider-vsphere.gemspec
@@ -16,8 +16,7 @@ Gem::Specification.new do |s|
   s.files         = Dir[ "lib/**/*" ]
   s.require_paths = ["lib"]
   s.add_dependency 'rbvmomi', '>= 2.1', '< 4.0'
-  
-  s.add_development_dependency 'vmpooler', '~> 2.4' # renaming done in version 2.1
+  s.add_dependency 'vmpooler', '~> 2.4'
 
   # Testing dependencies
   s.add_development_dependency 'climate_control', '>= 0.2.0'