diff --git a/terrapin.gemspec b/terrapin.gemspec
index 04dc0ac..6e7081f 100644
--- a/terrapin.gemspec
+++ b/terrapin.gemspec
@@ -21,4 +21,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency("rake")
   s.add_development_dependency("activesupport", ">= 3.0.0", "< 5.0")
   s.add_development_dependency("pry")
+  s.add_development_dependency("logger")
 end