diff --git a/activerecord-postgis-adapter.gemspec b/activerecord-postgis-adapter.gemspec
index 9a5e7541..3da8dcf2 100644
--- a/activerecord-postgis-adapter.gemspec
+++ b/activerecord-postgis-adapter.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "activerecord", "~> 5.1"
   spec.add_dependency "rgeo-activerecord", "~> 5.1"
 
-  spec.add_development_dependency "rake", "~> 12.0"
+  spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "minitest", "~> 5.4"
   spec.add_development_dependency "mocha", "~> 1.1"
   spec.add_development_dependency "appraisal", "~> 2.0"