diff --git a/re2.gemspec b/re2.gemspec
index f8c5753..6980779 100644
--- a/re2.gemspec
+++ b/re2.gemspec
@@ -41,7 +41,7 @@ Gem::Specification.new do |s|
     "spec/re2/scanner_spec.rb"
   ]
   s.add_development_dependency("rake-compiler", "~> 1.2.7")
-  s.add_development_dependency("rake-compiler-dock", "~> 1.5.0")
+  s.add_development_dependency("rake-compiler-dock", "~> 1.5.1")
   s.add_development_dependency("rspec", "~> 3.2")
   s.add_runtime_dependency("mini_portile2", "~> 2.8.7") # keep version in sync with extconf.rb
 end