diff --git a/gds-api-adapters.gemspec b/gds-api-adapters.gemspec
index 8099393e..0f2c0a7e 100644
--- a/gds-api-adapters.gemspec
+++ b/gds-api-adapters.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "byebug"
   s.add_development_dependency "climate_control", "~> 1.2"
   s.add_development_dependency "govuk_schemas", "~> 4.4"
-  s.add_development_dependency "minitest", "~> 5.11"
+  s.add_development_dependency "minitest", "~> 5.19"
   s.add_development_dependency "minitest-around", "~> 0.5"
   s.add_development_dependency "mocha", "~> 2.0"
   s.add_development_dependency "pact", "~> 1.62"