diff --git a/CHANGELOG.md b/CHANGELOG.md
index 728bf7bd..328b63f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,8 +2,14 @@
 
 ## Next
 
+### New features
+
 * Allow to use custom filename && directory name to store configs ([#341](https://github.com/rubyconfig/config/pull/341))
 
+### Bug fixes
+
+* Prevent name collision with private methods from ancestors ([#351](https://github.com/rubyconfig/config/pull/351))
+
 ## 5.1.0
 
 * Fix conflicts with Rails 7 active_support methods ([#347](https://github.com/rubyconfig/config/pull/347))
diff --git a/lib/config/options.rb b/lib/config/options.rb
index 08f3d409..07944b73 100644
--- a/lib/config/options.rb
+++ b/lib/config/options.rb
@@ -122,7 +122,7 @@ def merge!(hash)
     def [](param)
       return super if SETTINGS_RESERVED_NAMES.include?(param)
       return super if RAILS_RESERVED_NAMES.include?(param)
-      send("#{param}")
+      public_send("#{param}")
     end
 
     def []=(param, value)
diff --git a/spec/fixtures/reserved_keywords.yml b/spec/fixtures/reserved_keywords.yml
index 134941b1..1346fe73 100644
--- a/spec/fixtures/reserved_keywords.yml
+++ b/spec/fixtures/reserved_keywords.yml
@@ -7,6 +7,8 @@ max: kumquat
 min: fig
 exit!: taro
 table: strawberry
+lambda: proc
+proc: lambda 
 
 # Rails 7.* reserved keywords
 minimum: 10
diff --git a/spec/options_spec.rb b/spec/options_spec.rb
index ff65cc61..fbf0b0ca 100644
--- a/spec/options_spec.rb
+++ b/spec/options_spec.rb
@@ -19,6 +19,8 @@
       expect(config.min).to eq('fig')
       expect(config.exit!).to eq('taro')
       expect(config.table).to eq('strawberry')
+      expect(config.lambda).to eq('proc')
+      expect(config.proc).to eq('lambda')
     end
 
     it 'should allow to access them using [] operator' do
@@ -30,6 +32,8 @@
       expect(config['min']).to eq('fig')
       expect(config['exit!']).to eq('taro')
       expect(config['table']).to eq('strawberry')
+      expect(config['lambda']).to eq('proc')
+      expect(config['proc']).to eq('lambda')
 
       expect(config[:select]).to eq('apple')
       expect(config[:collect]).to eq('banana')
@@ -39,6 +43,8 @@
       expect(config[:min]).to eq('fig')
       expect(config[:exit!]).to eq('taro')
       expect(config[:table]).to eq('strawberry')
+      expect(config[:lambda]).to eq('proc')
+      expect(config[:proc]).to eq('lambda')
     end
 
     context 'when Settings file is using keywords reserved by Rails 7' do
@@ -64,14 +70,19 @@
       it 'should allow to access them via object member notation' do
         expect(config.select).to be_nil
         expect(config.table).to be_nil
+        expect(config.exit!).to be_nil        
       end
 
       it 'should allow to access them using [] operator' do
         expect(config['select']).to be_nil
         expect(config['table']).to be_nil
+        expect(config['lambda']).to be_nil
+        expect(config['proc']).to be_nil
+        expect(config['exit!']).to be_nil
 
         expect(config[:select]).to be_nil
         expect(config[:table]).to be_nil
+        expect(config[:exit!]).to be_nil
       end
     end
   end