diff --git a/jekyll-theme-deepdive.gemspec b/jekyll-theme-deepdive.gemspec
index a8e42e3..08f179f 100644
--- a/jekyll-theme-deepdive.gemspec
+++ b/jekyll-theme-deepdive.gemspec
@@ -24,6 +24,6 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency "jekyll-include-cache", "~> 0.2.1"
   # spec.add_runtime_dependency "github-pages", "~> 228"
 
-  spec.add_development_dependency "bundler", "~> 2.4.10"
-  spec.add_development_dependency "rake", "~> 12.3.3"
+  spec.add_development_dependency "bundler", "~> 2.4.20"
+  spec.add_development_dependency "rake", "~> 13.0.6"
 end