diff --git a/lib/rbs/definition_builder.rb b/lib/rbs/definition_builder.rb
index 42ba0447d..a32d89b68 100644
--- a/lib/rbs/definition_builder.rb
+++ b/lib/rbs/definition_builder.rb
@@ -788,5 +788,24 @@ def expand_alias(type_name)
       ensure_namespace!(type_name.namespace, location: entry.decl.location)
       entry.decl.type
     end
+
+    def update(env:, except:, ancestor_builder:)
+      method_builder = self.method_builder.update(env: env, except: except)
+      
+      DefinitionBuilder.new(env: env, ancestor_builder: ancestor_builder, method_builder: method_builder).tap do |builder|
+        builder.instance_cache.merge!(instance_cache)
+        builder.singleton_cache.merge!(singleton_cache)
+        builder.singleton0_cache.merge!(singleton0_cache)
+        builder.interface_cache.merge!(interface_cache)
+
+        except.each do |name|
+          builder.instance_cache.delete([name, true])
+          builder.instance_cache.delete([name, false])
+          builder.singleton_cache.delete(name)
+          builder.singleton0_cache.delete(name)
+          builder.interface_cache.delete(name)
+        end
+      end
+    end
   end
 end
diff --git a/lib/rbs/definition_builder/method_builder.rb b/lib/rbs/definition_builder/method_builder.rb
index 803310ddb..76312a285 100644
--- a/lib/rbs/definition_builder/method_builder.rb
+++ b/lib/rbs/definition_builder/method_builder.rb
@@ -219,6 +219,20 @@ def each_member_with_accessibility(members, accessibility: :public)
           end
         end
       end
+
+      def update(env:, except:)
+        MethodBuilder.new(env: env).tap do |copy|
+          copy.instance_methods.merge!(instance_methods)
+          copy.singleton_methods.merge!(singleton_methods)
+          copy.interface_methods.merge!(interface_methods)
+
+          except.each do |type_name|
+            copy.instance_methods.delete(type_name)
+            copy.singleton_methods.delete(type_name)
+            copy.interface_methods.delete(type_name)
+          end
+        end
+      end
     end
   end
 end
diff --git a/sig/definition_builder.rbs b/sig/definition_builder.rbs
index a35d6292c..e4e38cbd3 100644
--- a/sig/definition_builder.rbs
+++ b/sig/definition_builder.rbs
@@ -44,5 +44,7 @@ module RBS
     def define_methods: (Definition, interface_methods: Hash[Symbol, Definition::Method], methods: MethodBuilder::Methods, super_interface_method: bool) -> void
 
     def expand_alias: (TypeName) -> Types::t
+
+    def update: (env: Environment, ancestor_builder: AncestorBuilder, except: _Each[TypeName]) -> DefinitionBuilder
   end
 end
diff --git a/sig/method_builder.rbs b/sig/method_builder.rbs
index 62b30edb8..85cbd02dc 100644
--- a/sig/method_builder.rbs
+++ b/sig/method_builder.rbs
@@ -66,6 +66,8 @@ module RBS
       def build_method: (Methods, Methods::instance_type, member: AST::Members::MethodDefinition, accessibility: Methods::Definition::accessibility) -> void
 
       def each_member_with_accessibility: (Array[AST::Members::t | AST::Declarations::t], ?accessibility: Definition::accessibility) { (AST::Members::t | AST::Declarations::t, Definition::accessibility) -> void } -> void
+
+      def update: (env: Environment, except: _Each[TypeName]) -> MethodBuilder
     end
   end
 end