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-rw-r--r--lib/csv/csv.gemspec1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/csv/csv.gemspec b/lib/csv/csv.gemspec
index 84f3df87b7..6948e9a72f 100644
--- a/lib/csv/csv.gemspec
+++ b/lib/csv/csv.gemspec
@@ -60,4 +60,5 @@ Gem::Specification.new do |spec|
spec.add_development_dependency "bundler"
spec.add_development_dependency "rake"
spec.add_development_dependency "benchmark_driver"
+ spec.add_development_dependency "test-unit", ">= 3.4.3"
end