diff --git a/bcrypt_pbkdf.gemspec b/bcrypt_pbkdf.gemspec
index 75bfb30..63b41db 100644
--- a/bcrypt_pbkdf.gemspec
+++ b/bcrypt_pbkdf.gemspec
@@ -14,7 +14,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'minitest', '>= 5'
   s.add_development_dependency 'openssl'
   s.add_development_dependency 'rdoc', '~> 3.12'
-  s.add_development_dependency 'rake-compiler-dock', '~> 1.0.1'
+  s.add_development_dependency 'rake-compiler-dock', '~> 1.1.0'
 
   s.has_rdoc = true
   s.rdoc_options += ['--title', 'bcrypt_pbkdf', '--line-numbers', '--inline-source', '--main', 'README.md']