diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
index 77993e8..5c0e922 100644
--- a/.github/workflows/release-please.yml
+++ b/.github/workflows/release-please.yml
@@ -16,7 +16,7 @@ jobs:
           release-type: ruby
           package-name: openfeature-sdk
           bump-minor-pre-major: true
-          version-file: "lib/openfeature/sdk/version.rb"
+          version-file: "lib/open_feature/sdk/version.rb"
     outputs:
       release_created: ${{ steps.release.outputs.release_created }}
       release_tag_name: ${{ steps.release.outputs.tag_name }}
diff --git a/README.md b/README.md
index 161e86c..43bbfab 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ gem install openfeature-sdk
 ## Usage
 
 ```ruby
-require 'openfeature/sdk'
+require 'open_feature/sdk'
 require 'json' # For JSON.dump
 
 # API Initialization and configuration
diff --git a/lib/openfeature/sdk.rb b/lib/open_feature/sdk.rb
similarity index 100%
rename from lib/openfeature/sdk.rb
rename to lib/open_feature/sdk.rb
diff --git a/lib/openfeature/sdk/api.rb b/lib/open_feature/sdk/api.rb
similarity index 100%
rename from lib/openfeature/sdk/api.rb
rename to lib/open_feature/sdk/api.rb
diff --git a/lib/openfeature/sdk/client.rb b/lib/open_feature/sdk/client.rb
similarity index 100%
rename from lib/openfeature/sdk/client.rb
rename to lib/open_feature/sdk/client.rb
diff --git a/lib/openfeature/sdk/configuration.rb b/lib/open_feature/sdk/configuration.rb
similarity index 100%
rename from lib/openfeature/sdk/configuration.rb
rename to lib/open_feature/sdk/configuration.rb
diff --git a/lib/openfeature/sdk/metadata.rb b/lib/open_feature/sdk/metadata.rb
similarity index 100%
rename from lib/openfeature/sdk/metadata.rb
rename to lib/open_feature/sdk/metadata.rb
diff --git a/lib/openfeature/sdk/provider/no_op_provider.rb b/lib/open_feature/sdk/provider/no_op_provider.rb
similarity index 100%
rename from lib/openfeature/sdk/provider/no_op_provider.rb
rename to lib/open_feature/sdk/provider/no_op_provider.rb
diff --git a/lib/openfeature/sdk/version.rb b/lib/open_feature/sdk/version.rb
similarity index 100%
rename from lib/openfeature/sdk/version.rb
rename to lib/open_feature/sdk/version.rb
diff --git a/openfeature-sdk.gemspec b/openfeature-sdk.gemspec
index 8c74b17..8d6c4e3 100644
--- a/openfeature-sdk.gemspec
+++ b/openfeature-sdk.gemspec
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require_relative "lib/openfeature/sdk/version"
+require_relative "lib/open_feature/sdk/version"
 
 Gem::Specification.new do |spec|
   spec.name = "openfeature-sdk"
diff --git a/release-please-config.json b/release-please-config.json
index 69c2451..770a679 100644
--- a/release-please-config.json
+++ b/release-please-config.json
@@ -9,7 +9,7 @@
       "bump-minor-pre-major": true,
       "bump-patch-for-minor-pre-major": true,
       "package-name": "openfeature-sdk",
-      "version-file": "lib/openfeature/sdk/version.rb"
+      "version-file": "lib/open_feature/sdk/version.rb"
     }
   }
 }
diff --git a/spec/openfeature/example_spec.rb b/spec/open_feature/example_spec.rb
similarity index 100%
rename from spec/openfeature/example_spec.rb
rename to spec/open_feature/example_spec.rb
diff --git a/spec/openfeature/sdk/api_spec.rb b/spec/open_feature/sdk/api_spec.rb
similarity index 94%
rename from spec/openfeature/sdk/api_spec.rb
rename to spec/open_feature/sdk/api_spec.rb
index 71e6c6d..75a039e 100644
--- a/spec/openfeature/sdk/api_spec.rb
+++ b/spec/open_feature/sdk/api_spec.rb
@@ -1,10 +1,6 @@
 # frozen_string_literal: true
 
-require_relative "../../spec_helper"
-
-require "openfeature/sdk/configuration"
-require "openfeature/sdk/api"
-require "openfeature/sdk/metadata"
+require "spec_helper"
 
 # https://openfeature.dev/docs/specification/sections/flag-evaluation#11-api-initialization-and-configuration
 
diff --git a/spec/openfeature/sdk/client_spec.rb b/spec/open_feature/sdk/client_spec.rb
similarity index 98%
rename from spec/openfeature/sdk/client_spec.rb
rename to spec/open_feature/sdk/client_spec.rb
index 1496682..d98b8ae 100644
--- a/spec/openfeature/sdk/client_spec.rb
+++ b/spec/open_feature/sdk/client_spec.rb
@@ -1,10 +1,6 @@
 # frozen_string_literal: true
 
-require_relative "../../spec_helper"
-
-require "openfeature/sdk/client"
-require "openfeature/sdk/metadata"
-require "openfeature/sdk/provider/no_op_provider"
+require "spec_helper"
 
 # https://openfeature.dev/docs/specification/sections/flag-evaluation#12-client-usage
 
diff --git a/spec/openfeature/sdk_spec.rb b/spec/open_feature/sdk_spec.rb
similarity index 100%
rename from spec/openfeature/sdk_spec.rb
rename to spec/open_feature/sdk_spec.rb
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 5d8d52e..a9942c0 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -2,7 +2,7 @@
 
 require "simplecov"
 
-require "openfeature/sdk"
+require "open_feature/sdk"
 
 require "markly"