diff --git a/Gemfile b/Gemfile
index 0194885..8a776b6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,11 +3,6 @@ gemspec
 
 gem 'rake'
 
-if RUBY_VERSION >= '3.4'
-  # the activesupport gem depends on the bigdecimal gem, which has been extracted as a bundled gem since Ruby 3.4.
-  gem 'bigdecimal'
-end
-
 if RUBY_VERSION >= '4.0'
   # the mongo gem depends on the logger gem, which has been extracted as a bundled gem since Ruby 4.0.
   gem 'logger'