diff --git a/train.gemspec b/train.gemspec
index 349ef048..d23e7eb7 100644
--- a/train.gemspec
+++ b/train.gemspec
@@ -36,6 +36,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "azure_graph_rbac", "~> 0.16"
   spec.add_dependency "azure_mgmt_key_vault", "~> 0.17"
   spec.add_dependency "azure_mgmt_security", "~> 0.18"
+  spec.add_dependency "azure_mgmt_storage", "~> 0.18"
   spec.add_dependency "activesupport", "~> 5.2.3"
   spec.add_dependency "google-api-client", ">= 0.23.9", "< 0.35.0"
   spec.add_dependency "googleauth", ">= 0.6.6", "< 0.11.0"