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-rw-r--r--highline.gemspec1
1 files changed, 1 insertions, 0 deletions
diff --git a/highline.gemspec b/highline.gemspec
index 2a3d691..9523c0f 100644
--- a/highline.gemspec
+++ b/highline.gemspec
@@ -33,4 +33,5 @@ minutes of work.
END_DESC
spec.add_development_dependency "code_statistics"
+ spec.required_ruby_version = '>= 1.9.3'
end