diff --git a/pghero.gemspec b/pghero.gemspec
index 13414fa8a..7aac9e03e 100644
--- a/pghero.gemspec
+++ b/pghero.gemspec
@@ -21,10 +21,10 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency "activerecord"
 
-  spec.add_development_dependency "bundler", "~> 1.6"
-  spec.add_development_dependency "rake"
-  spec.add_development_dependency "minitest"
   spec.add_development_dependency "activerecord-import"
+  spec.add_development_dependency "bundler"
+  spec.add_development_dependency "minitest"
+  spec.add_development_dependency "rake"
 
   if RUBY_PLATFORM == "java"
     spec.add_development_dependency "activerecord-jdbcpostgresql-adapter"