diff --git a/.travis.yml b/.travis.yml
index c36e10b..ca647d5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,3 +5,7 @@ rvm:
   - 2.5
   - 2.4
   - 2.3
+
+before_install:
+  - gem uninstall -x -i /home/travis/.rvm/gems/ruby-2.3.7@global bundler || true
+  - gem install bundler -v '< 2'
diff --git a/dyndnsd.gemspec b/dyndnsd.gemspec
index 7a5760a..17e3e07 100644
--- a/dyndnsd.gemspec
+++ b/dyndnsd.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'rack-tracer', '~> 0.8.0'
   s.add_runtime_dependency 'jaeger-client', '~> 0.10.0'
 
-  s.add_development_dependency 'bundler'
+  s.add_development_dependency 'bundler', '< 2'
   s.add_development_dependency 'rake'
   s.add_development_dependency 'rspec'
   s.add_development_dependency 'rack-test'