diff --git a/aws_security_viz.gemspec b/aws_security_viz.gemspec
index f0ca5de..c0ba79e 100644
--- a/aws_security_viz.gemspec
+++ b/aws_security_viz.gemspec
@@ -33,6 +33,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'rgl', '~> 0.5.3'
   s.add_runtime_dependency 'webrick', '>= 1.8.1', '< 1.10.0'
   s.add_runtime_dependency 'aws-sdk-ec2', '>= 1.65', '< 1.499'
+  s.add_runtime_dependency 'base64', '~> 0.2.0'
 
   s.required_ruby_version = '>= 3.0.0'
 end