diff --git a/just-the-docs.gemspec b/just-the-docs.gemspec
index 5ae496b..7a02603 100644
--- a/just-the-docs.gemspec
+++ b/just-the-docs.gemspec
@@ -16,5 +16,5 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency "jekyll", "~> 3.8.5"
   spec.add_runtime_dependency "rake", "~> 12.3.1"
 
-  spec.add_development_dependency "bundler", "~> 1.17.1"
+  spec.add_development_dependency "bundler", "~> 2.0.1"
 end