diff --git a/apex-aprs.gemspec b/apex-aprs.gemspec
index b58acd638181650ef8f364150b2729df94c91e21..e9eebe69c77af697a50651ca7e4cbabec61d19d3 100644
--- a/apex-aprs.gemspec
+++ b/apex-aprs.gemspec
@@ -31,7 +31,7 @@ Gem::Specification.new do |spec|
 
     spec.add_dependency 'abstractify', '~> 1.1'
     spec.add_dependency 'json', '~> 2.5'
-    spec.add_dependency 'kiss-tnc', '~> 2.0'
+    spec.add_dependency 'kiss-tnc', '~> 2.1'
     spec.add_development_dependency 'bundler', '~> 2.2'
     spec.add_development_dependency 'rake', '~> 13.0'
     spec.add_development_dependency 'rspec', '~> 3.12'