diff --git a/trmnl-api.gemspec b/trmnl-api.gemspec
index d9edf4c..1816796 100644
--- a/trmnl-api.gemspec
+++ b/trmnl-api.gemspec
@@ -29,6 +29,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "dry-schema", "~> 1.14"
   spec.add_dependency "http", "~> 5.2"
   spec.add_dependency "infusible", "~> 4.3"
+  spec.add_dependency "inspectable", "~> 0.3"
   spec.add_dependency "pipeable", "~> 1.3"
   spec.add_dependency "zeitwerk", "~> 2.7"