diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index ca51938..03cf07b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,7 +20,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           bundler-cache: true
-          ruby-version: ruby
+          ruby-version: .ruby-version
 
       # Release
       - uses: rubygems/release-gem@v1
\ No newline at end of file
diff --git a/lamby.gemspec b/lamby.gemspec
index 90a8185..fd5d8ba 100644
--- a/lamby.gemspec
+++ b/lamby.gemspec
@@ -25,7 +25,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'minitest'
   spec.add_development_dependency 'minitest-focus'
-  spec.add_development_dependency 'mocha'
   spec.add_development_dependency 'pry'
   spec.add_development_dependency 'timecop'
   spec.add_development_dependency 'webrick'