diff --git a/README.md b/README.md
index 7dbe3f1e5282e6324eb895340d7c2dba1acd3634..df070b70668124aefe3a88f36937cb9751ee728c 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,20 @@ After checking out the repo, run `bin/setup` to install dependencies. You can al
 
 To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
 
+### Unit Tests
+
+To run all unit tests first make sure you have dependencies installed:
+
+```bash
+bundle install
+```
+
+then run the tests with:
+
+```bash
+bundle exec rake test
+```
+
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/Syncleus/apex-aprs
-
diff --git a/apex-aprs.gemspec b/apex-aprs.gemspec
index fa6fae9c34d57c6f464090b6e78c392ff97d9ba8..57375aa1686d49c65ce6ff2dc27d3623682568eb 100644
--- a/apex-aprs.gemspec
+++ b/apex-aprs.gemspec
@@ -34,6 +34,7 @@ Gem::Specification.new do |spec|
     spec.add_dependency 'kiss-tnc', '~> 1.0'
     spec.add_development_dependency 'bundler', '~> 2.2'
     spec.add_development_dependency 'rake', '~> 13.0'
-    spec.add_development_dependency 'rdoc', '~> 6.3'
+    spec.add_development_dependency 'test-unit', '~> 3.6'
+    #spec.add_development_dependency 'rdoc', '~> 6.3'
     spec.add_development_dependency 'aruba', '~> 2.0'
 end