diff --git a/discordrb.gemspec b/discordrb.gemspec
index d7b5c5af2..648fbf8fd 100644
--- a/discordrb.gemspec
+++ b/discordrb.gemspec
@@ -34,6 +34,8 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency 'discordrb-webhooks', '~> 3.5.0'
 
+  spec.add_dependency 'base64', '~> 0.2.0'
+
   spec.required_ruby_version = '>= 3.1'
 
   spec.add_development_dependency 'bundler', '>= 1.10', '< 3'