diff --git a/dyndnsd.gemspec b/dyndnsd.gemspec
index f0000a4..0dc2602 100644
--- a/dyndnsd.gemspec
+++ b/dyndnsd.gemspec
@@ -29,7 +29,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'async', '~> 1.31.0'
   s.add_dependency 'async-dns', '~> 1.3.0'
-  s.add_dependency 'base64', '~> 0.2.0' # needed for async
+  s.add_dependency 'base64', '~> 0.3.0' # needed for async
   s.add_dependency 'logger', '>= 1.6', '< 1.8'
   s.add_dependency 'metriks'
   s.add_dependency 'opentelemetry-exporter-jaeger', '~> 0.22.0'