diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e9b0c8..575b89a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.12.1] - 2026-03-24
+
+### Fixed
+- Require `fileutils` from the gem entrypoint and call `::FileUtils.rm_f` so `OpenApiImport.from` does not raise `uninitialized constant OpenApiImport::FileUtils` when nothing else has loaded the stdlib first
+
 ## [0.12.0] - 2026-03-17
 
 ### Added
diff --git a/lib/open_api_import.rb b/lib/open_api_import.rb
index d880697..3aa7df5 100644
--- a/lib/open_api_import.rb
+++ b/lib/open_api_import.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "fileutils"
+
 require_relative "open_api_import/utils"
 require_relative "open_api_import/filter"
 require_relative "open_api_import/pretty_hash_symbolized"
diff --git a/lib/open_api_import/open_api_import.rb b/lib/open_api_import/open_api_import.rb
index 5f39bba..07cef76 100644
--- a/lib/open_api_import/open_api_import.rb
+++ b/lib/open_api_import/open_api_import.rb
@@ -5,7 +5,7 @@
 class OpenApiImport
   class ParseError < StandardError; end
 
-  VERSION = "0.12.0"
+  VERSION = "0.12.1"
 
   extend LibOpenApiImport
 
@@ -53,7 +53,7 @@ def self.from(swagger_file, create_method_name: :operation_id, include_responses
       end
 
       file_errors = "#{file_to_convert}.errors.log"
-      FileUtils.rm_f(file_errors)
+      ::FileUtils.rm_f(file_errors)
       import_errors = ""
       required_constants = []
 
diff --git a/open_api_import.gemspec b/open_api_import.gemspec
index 1502e7e..1059b1d 100644
--- a/open_api_import.gemspec
+++ b/open_api_import.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name = "open_api_import"
-  s.version = "0.12.0"
+  s.version = "0.12.1"
   s.summary = "OpenApiImport -- Import a Swagger or Open API file and create a Ruby Request Hash file including all requests and responses with all the examples. The file can be in JSON or YAML"
   s.description = "OpenApiImport -- Import a Swagger or Open API file and create a Ruby Request Hash file including all requests and responses with all the examples. The file can be in JSON or YAML"
   s.authors = ["Mario Ruiz"]
diff --git a/spec/open_api_import/fileutils_require_spec.rb b/spec/open_api_import/fileutils_require_spec.rb
new file mode 100644
index 0000000..8502606
--- /dev/null
+++ b/spec/open_api_import/fileutils_require_spec.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+require "open_api_import"
+
+RSpec.describe "OpenApiImport stdlib dependencies" do
+  it "loads FileUtils when requiring the gem (regression for OpenApiImport.from)" do
+    expect(defined?(FileUtils)).to eq("constant")
+  end
+end