diff --git a/Gemfile b/Gemfile
index 331c1fcce..5106144b0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -50,6 +50,10 @@ if RUBY_VERSION <= '2.3.0' && !!(RbConfig::CONFIG['host_os'] =~ /cygwin|mswin|mi
   gem "childprocess", "< 1.0.0"
 elsif RUBY_VERSION < '2.0.0'
   gem "childprocess", "< 1.0.0"
+elsif RUBY_VERSION < '2.3.0'
+  gem "childprocess", "< 3.0.0"
+else
+  gem "childprocess", ">= 3.0.0"
 end
 
 if RUBY_VERSION < '1.9.2'