diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index b47a83854d..27d33933d1 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   Remove deprecated `config.active_record.sqlite3.represent_boolean_as_integer`.
+
+    *Rafael Mendonça França*
+
 *   `relation.create` does no longer leak scope to class level querying methods
     in initialization block and callbacks.
 
diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
index 8964147a6c..ad4390d42d 100644
--- a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
@@ -76,16 +76,6 @@ module ActiveRecord
         json:         { name: "json" },
       }
 
-      def self.represent_boolean_as_integer=(value) # :nodoc:
-        if value == false
-          raise "`.represent_boolean_as_integer=` is now always true, so make sure your application can work with it and remove this settings."
-        end
-
-        ActiveSupport::Deprecation.warn(
-          "`.represent_boolean_as_integer=` is now always true, so setting this is deprecated and will be removed in Rails 6.1."
-        )
-      end
-
       class StatementPool < ConnectionAdapters::StatementPool # :nodoc:
         private
           def dealloc(stmt)
diff --git a/activerecord/lib/active_record/railtie.rb b/activerecord/lib/active_record/railtie.rb
index a5f1829b75..21c664c64d 100644
--- a/activerecord/lib/active_record/railtie.rb
+++ b/activerecord/lib/active_record/railtie.rb
@@ -31,9 +31,6 @@ module ActiveRecord
     config.active_record.maintain_test_schema = true
     config.active_record.has_many_inversing = false
 
-    config.active_record.sqlite3 = ActiveSupport::OrderedOptions.new
-    config.active_record.sqlite3.represent_boolean_as_integer = nil
-
     config.active_record.queues = ActiveSupport::InheritableOptions.new(destroy: :active_record_destroy)
 
     config.eager_load_namespaces << ActiveRecord
@@ -208,16 +205,6 @@ To keep using the current cache store, you can turn off cache versioning entirel
       ActiveSupport.on_load(:active_record) do
         configs = app.config.active_record
 
-        represent_boolean_as_integer = configs.sqlite3.delete(:represent_boolean_as_integer)
-
-        unless represent_boolean_as_integer.nil?
-          ActiveSupport.on_load(:active_record_sqlite3adapter) do
-            ActiveRecord::ConnectionAdapters::SQLite3Adapter.represent_boolean_as_integer = represent_boolean_as_integer
-          end
-        end
-
-        configs.delete(:sqlite3)
-
         configs.each do |k, v|
           send "#{k}=", v
         end
diff --git a/guides/source/6_1_release_notes.md b/guides/source/6_1_release_notes.md
index 5c6f395b1b..1d2cc7572d 100644
--- a/guides/source/6_1_release_notes.md
+++ b/guides/source/6_1_release_notes.md
@@ -149,6 +149,8 @@ Please refer to the [Changelog][active-record] for detailed changes.
 
 ### Removals
 
+*   Remove deprecated `config.active_record.sqlite3.represent_boolean_as_integer`.
+
 *   Remove deprecated methods from `ActiveRecord::DatabaseConfigurations`.
 
     `fetch`