diff --git a/Gemfile b/Gemfile
index ae5ba54..64b47a4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,6 +11,5 @@ group :development do
   # Vagrant environment itself using `vagrant plugin`.
   gem 'vagrant', git: 'https://github.com/hashicorp/vagrant.git', branch: 'main'
 
-  # Switch back to the upstream after this PR is merged: https://github.com/hashicorp/vagrant-spec/pull/43
-  gem 'vagrant-spec', git: 'https://github.com/legal90/vagrant-spec.git', branch: 'fix-synced-folder-after-reboot'
+  gem 'vagrant-spec', git: 'https://github.com/hashicorp/vagrant-spec.git', branch: 'main'
 end
diff --git a/vagrant-parallels.gemspec b/vagrant-parallels.gemspec
index 37433a7..2f4529f 100644
--- a/vagrant-parallels.gemspec
+++ b/vagrant-parallels.gemspec
@@ -20,8 +20,8 @@ Gem::Specification.new do |spec|
 
   # Constraint rake to properly handle deprecated method usage
   # from within rspec
-  spec.add_development_dependency 'rake', '~> 12.3.3'
-  spec.add_development_dependency 'rspec', '~> 3.5.0'
+  spec.add_development_dependency 'rake', '~> 13.0'
+  spec.add_development_dependency 'rspec', '~> 3.10.0'
   spec.add_development_dependency 'rspec-its', '~> 1.3.0'
 
   spec.files = Dir['lib/**/*', 'locales/**/*', 'README.md', 'CHANGELOG.md', 'LICENSE.txt']