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-rw-r--r--psych.gemspec1
1 files changed, 1 insertions, 0 deletions
diff --git a/psych.gemspec b/psych.gemspec
index d1764b2..1875782 100644
--- a/psych.gemspec
+++ b/psych.gemspec
@@ -46,6 +46,7 @@ DESCRIPTION
s.required_rubygems_version = Gem::Requirement.new(">= 0")
s.add_development_dependency 'rake-compiler', ">= 0.4.1"
+ s.add_development_dependency 'rake-compiler-dock', ">= 0.6.1"
s.add_development_dependency 'minitest', "~> 5.0"
if RUBY_ENGINE == 'jruby'