diff --git a/.github/workflows/rspec.yml b/.github/workflows/rspec.yml
index 5a734e4..ee141db 100644
--- a/.github/workflows/rspec.yml
+++ b/.github/workflows/rspec.yml
@@ -21,13 +21,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # TODO: unlock jruby when https://github.com/jruby/jruby/issues/8116 is fixed
-        ruby: ["jruby-9.4.5.0", "3.0", 3.1, 3.2]
+        ruby: ["jruby-9.4.8.0", "3.0", 3.1, 3.2]
 
         gemfile: [
           "gemfiles/jruby.gemfile",
-          "gemfiles/rails_6_2.gemfile",
-          "gemfiles/rails_7_0.gemfile"
+          "gemfiles/rails_7_0.gemfile",
+          "gemfiles/rails_7_1.gemfile",
+          "gemfiles/rails_7_2.gemfile"
         ]
 
         enable_parent_assignment: ["true", "false"]
@@ -36,13 +36,18 @@ jobs:
           - false
 
         exclude:
-          - ruby: "jruby-9.4.5.0"
-            gemfile: gemfiles/rails_6_2.gemfile
-          - ruby: "jruby-9.4.5.0"
+          - ruby: "jruby-9.4.8.0"
             gemfile: gemfiles/rails_7_0.gemfile
-          - ruby: "jruby-9.4.5.0"
+          - ruby: "jruby-9.4.8.0"
+            gemfile: gemfiles/rails_7_1.gemfile
+          - ruby: "jruby-9.4.8.0"
+            gemfile: gemfiles/rails_7_2.gemfile
+          - ruby: "jruby-9.4.8.0"
             gemfile: gemfiles/railsmaster.gemfile
 
+          - ruby: "3.0"
+            gemfile: gemfiles/rails_7_2.gemfile
+
           - ruby: "3.0"
             gemfile: gemfiles/jruby.gemfile
           - ruby: 3.1
diff --git a/.github/workflows/rubocop.yml b/.github/workflows/rubocop.yml
index d3c2783..287906b 100644
--- a/.github/workflows/rubocop.yml
+++ b/.github/workflows/rubocop.yml
@@ -14,7 +14,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.7
+        ruby-version: 3.0
     - name: Lint Ruby code with RuboCop
       run: |
         bundle install --gemfile gemfiles/rails_7_0.gemfile --jobs 4 --retry 3
diff --git a/.rubocop.yml b/.rubocop.yml
index a406044..4f3d01d 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,5 +1,5 @@
 AllCops:
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 3.0
   Include:
     - 'lib/**/*.rb'
     - 'spec/**/*.rb'
@@ -22,5 +22,11 @@ Metrics/BlockLength:
   Exclude:
     - 'spec/**/*.rb'
 
+Metrics/CyclomaticComplexity:
+  Max: 8
+
 Style/NumericLiterals:
   Enabled: false
+
+Lint/ConstantDefinitionInBlock:
+  Enabled: false
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1fb0e8..f778822 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 ## master
 
+## 4.0.0 (TBD)
+
+- [PR #182](https://github.com/DmitryTsepelev/store_model/pull/182) Update Ruby and Rails versions, raise an error when database is not available (cause private API we use is deprecated https://github.com/rails/rails/commit/e0a55b038f7f2f50d1467876558be183be6cedaa) ([@DmitryTsepelev])
+- [PR #181](https://github.com/DmitryTsepelev/store_model/pull/181) Treat all Hash-like input as a Hash ([@ql])
+- [PR #180](https://github.com/DmitryTsepelev/store_model/pull/180) Add update_only option to StoreModel#accepts_nested_attributes_for ([@ql])
+
 ## 3.0.2 (2024-06-05)
 
 - [PR #176](https://github.com/DmitryTsepelev/store_model/pull/176) fix: serialize empty has-many array ([@bf4])
@@ -232,3 +238,4 @@
 [@osanay]: https://github.com/osanay
 [@manuelvanrijn]: https://github.com/manuelvanrijn
 [@bf4]: https://github.com/bf4
+[@ql]: https://github.com/ql
diff --git a/Gemfile b/Gemfile
index 2726e12..fd46d8a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,6 +8,6 @@ local_gemfile = File.join(__dir__, "Gemfile.local")
 if File.exist?(local_gemfile)
   eval(File.read(local_gemfile)) # rubocop:disable Security/Eval
 else
-  gem "sqlite3", "~> 1.4.0"
-  gem "activerecord", "~> 6.0"
+  gem "sqlite3", "~> 1.7.0"
+  gem "activerecord", "~> 7.0"
 end
diff --git a/gemfiles/jruby.gemfile b/gemfiles/jruby.gemfile
index 74bc386..04484c6 100644
--- a/gemfiles/jruby.gemfile
+++ b/gemfiles/jruby.gemfile
@@ -2,6 +2,6 @@ source "https://rubygems.org"
 
 gem "jdbc-sqlite3", platform: :jruby
 gem "activerecord-jdbcmysql-adapter", platform: :jruby
-gem "activerecord", "~> 6.0.0"
+gem "activerecord", "~> 7.0.0"
 
 gemspec path: "../"
diff --git a/gemfiles/rails_6_2.gemfile b/gemfiles/rails_7_1.gemfile
similarity index 71%
rename from gemfiles/rails_6_2.gemfile
rename to gemfiles/rails_7_1.gemfile
index 293566f..9a9f647 100644
--- a/gemfiles/rails_6_2.gemfile
+++ b/gemfiles/rails_7_1.gemfile
@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
 gem "sqlite3", "~> 1.4.0"
-gem "activerecord", "~> 6.0.2"
+gem "activerecord", "~> 7.1.0"
 
 gemspec path: "../"
diff --git a/gemfiles/rails_7_2.gemfile b/gemfiles/rails_7_2.gemfile
new file mode 100644
index 0000000..fc2e8de
--- /dev/null
+++ b/gemfiles/rails_7_2.gemfile
@@ -0,0 +1,6 @@
+source "https://rubygems.org"
+
+gem "sqlite3", "~> 1.4.0"
+gem "activerecord", "~> 7.2.0"
+
+gemspec path: "../"
diff --git a/lib/store_model/model.rb b/lib/store_model/model.rb
index 898eb47..cd082a2 100644
--- a/lib/store_model/model.rb
+++ b/lib/store_model/model.rb
@@ -228,7 +228,7 @@ def serialize_enums!(json)
             .attribute_types
             .select { |_, type| type.is_a?(StoreModel::Types::EnumType) }
 
-      enum_mappings.each do |name, _|
+      enum_mappings.each_key do |name|
         next unless json.key?(name)
 
         json[name] = public_send(name).as_json unless json[name].nil?
diff --git a/lib/store_model/nested_attributes.rb b/lib/store_model/nested_attributes.rb
index b38b956..d40397d 100644
--- a/lib/store_model/nested_attributes.rb
+++ b/lib/store_model/nested_attributes.rb
@@ -60,11 +60,7 @@ def accepts_nested_attributes_for(*attributes)
       # If schema loaded the attribute_types already populated and we can safely use it
       # See ActiveRecord::ModelSchema#load_schema!
       def nested_attribute_type(attribute)
-        if self < ActiveRecord::Base && !schema_loaded?
-          attributes_to_define_after_schema_loads[attribute.to_s]&.first
-        else
-          attribute_types[attribute.to_s]
-        end
+        attribute_types[attribute.to_s]
       end
 
       def define_store_model_attr_accessors(attribute, options) # rubocop:disable Metrics/MethodLength
@@ -104,7 +100,7 @@ def define_association_setter_for_single(association, options)
         return unless options&.dig(:allow_destroy)
 
         define_method "#{association}=" do |attributes|
-          if ActiveRecord::Type::Boolean.new.cast(attributes.stringify_keys.dig("_destroy"))
+          if ActiveRecord::Type::Boolean.new.cast(attributes.stringify_keys["_destroy"])
             super(nil)
           else
             super(attributes)
@@ -121,7 +117,7 @@ def assign_nested_attributes_for_collection_association(association, attributes,
 
       if options&.dig(:allow_destroy)
         attributes.reject! do |attribute|
-          ActiveRecord::Type::Boolean.new.cast(attribute.stringify_keys.dig("_destroy"))
+          ActiveRecord::Type::Boolean.new.cast(attribute.stringify_keys["_destroy"])
         end
       end
 
diff --git a/lib/store_model/types/enum_type.rb b/lib/store_model/types/enum_type.rb
index 54ab2f9..0e3f067 100644
--- a/lib/store_model/types/enum_type.rb
+++ b/lib/store_model/types/enum_type.rb
@@ -14,6 +14,7 @@ class EnumType < ActiveModel::Type::Value
       def initialize(mapping, raise_on_invalid_values)
         @mapping = mapping
         @raise_on_invalid_values = raise_on_invalid_values
+        super()
       end
 
       # Returns type
diff --git a/lib/store_model/types/many.rb b/lib/store_model/types/many.rb
index 1c2528d..521d751 100644
--- a/lib/store_model/types/many.rb
+++ b/lib/store_model/types/many.rb
@@ -14,6 +14,7 @@ class Many < ManyBase
       # @return [StoreModel::Types::Many]
       def initialize(model_klass)
         @model_klass = model_klass
+        super()
       end
 
       # Returns type
diff --git a/lib/store_model/types/many_polymorphic.rb b/lib/store_model/types/many_polymorphic.rb
index da0a608..5e04c06 100644
--- a/lib/store_model/types/many_polymorphic.rb
+++ b/lib/store_model/types/many_polymorphic.rb
@@ -16,6 +16,7 @@ class ManyPolymorphic < ManyBase
       # @return [StoreModel::Types::PolymorphicArrayType ]
       def initialize(model_wrapper)
         @model_wrapper = model_wrapper
+        super()
       end
 
       # Returns type
diff --git a/lib/store_model/types/one.rb b/lib/store_model/types/one.rb
index b9da78d..b75d1fa 100644
--- a/lib/store_model/types/one.rb
+++ b/lib/store_model/types/one.rb
@@ -13,6 +13,7 @@ class One < OneBase
       # @return [StoreModel::Types::One]
       def initialize(model_klass)
         @model_klass = model_klass
+        super()
       end
 
       # Returns type
diff --git a/lib/store_model/types/one_polymorphic.rb b/lib/store_model/types/one_polymorphic.rb
index 9608aa2..f226f0a 100644
--- a/lib/store_model/types/one_polymorphic.rb
+++ b/lib/store_model/types/one_polymorphic.rb
@@ -15,6 +15,7 @@ class OnePolymorphic < OneBase
       # @return [StoreModel::Types::OnePolymorphic ]
       def initialize(model_wrapper)
         @model_wrapper = model_wrapper
+        super()
       end
 
       # Returns type
diff --git a/spec/dummy/app/models/configuration.rb b/spec/dummy/app/models/configuration.rb
index 0dc551c..eeabb9b 100644
--- a/spec/dummy/app/models/configuration.rb
+++ b/spec/dummy/app/models/configuration.rb
@@ -8,11 +8,11 @@ class Encrypted < ActiveModel::Type::Value
     ENCODING = "MOhqm0PnycUZeLdK8YvDCgNfb7FJtiHT52BrxoAkas9RWlXpEujSGI64VzQ31w"
 
     def serialize(value)
-      value&.tr(ALPHABET, ENCODING) if value
+      value&.tr(ALPHABET, ENCODING)
     end
 
     def deserialize(value)
-      value&.tr(ENCODING, ALPHABET) if value
+      value&.tr(ENCODING, ALPHABET)
     end
   end
 
diff --git a/spec/dummy/db/schema.rb b/spec/dummy/db/schema.rb
index 79bbfc1..11a3b46 100644
--- a/spec/dummy/db/schema.rb
+++ b/spec/dummy/db/schema.rb
@@ -5,6 +5,7 @@
     t.string :name
     t.references :store, null: true
     t.json :configuration, default: {}
+    t.json :product_configuration, default: {}
   end
 
   create_table :stores do |t|
diff --git a/spec/store_model/nested_attributes_spec.rb b/spec/store_model/nested_attributes_spec.rb
index 925365f..b642993 100644
--- a/spec/store_model/nested_attributes_spec.rb
+++ b/spec/store_model/nested_attributes_spec.rb
@@ -45,15 +45,17 @@ class ProductConfiguration
       end
 
       class Product < ActiveRecord::Base
-        attribute :configuration, ProductConfiguration.to_type, default: ProductConfiguration.new
+        attribute :product_configuration, ProductConfiguration.to_type, default: ProductConfiguration.new
       end
 
       suppliers = [Supplier.new(title: "The Supplier")]
-      product = Product.create!(configuration: ProductConfiguration.new(color: "red", suppliers: suppliers))
+      product = Product.create!(product_configuration: ProductConfiguration.new(color: "red", suppliers: suppliers))
 
-      configuration_type = Product.select('json_type(configuration, "$") as config').where(id: product.id).first
-      suppliers_type = Product.select('json_type(configuration, "$.suppliers") as config').where(id: product.id).first
-      supplier_type = Product.select('json_type(configuration, "$.suppliers[0]") as config').where(id: product.id).first
+      configuration_type = Product.select('json_type(product_configuration, "$") as config').where(id: product.id).first
+      suppliers_type = Product.select('json_type(product_configuration, "$.suppliers") as config')
+                              .where(id: product.id).first
+      supplier_type = Product.select('json_type(product_configuration, "$.suppliers[0]") as config')
+                             .where(id: product.id).first
 
       expect(configuration_type.config).to eq("object")
       expect(suppliers_type.config).to eq("array")
@@ -70,6 +72,7 @@ class NestedStore
 
           enum :status, in: { active: 1, inactive: 2, archived: 3 }
         end
+
         class Store
           include StoreModel::Model
 
@@ -532,8 +535,7 @@ def self.name
           end
         end
 
-        it { expect { subject }.not_to(raise_error) }
-        it { expect(subject.instance_methods).to(include(:suppliers_attributes=)) }
+        it { expect { subject }.to raise_error(ActiveRecord::StatementInvalid) }
       end
     end
   end
diff --git a/store_model.gemspec b/store_model.gemspec
index 4c223e8..885630a 100644
--- a/store_model.gemspec
+++ b/store_model.gemspec
@@ -16,11 +16,11 @@ Gem::Specification.new do |spec|
 
   spec.files = Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]
 
-  spec.required_ruby_version = ">= 2.6"
+  spec.required_ruby_version = ">= 3.0"
 
-  spec.add_dependency "activerecord", ">= 5.2"
+  spec.add_dependency "activerecord", ">= 7.0"
 
   spec.add_development_dependency "rspec"
   spec.add_development_dependency "rspec-rails"
-  spec.add_development_dependency "rubocop", "0.64.0"
+  spec.add_development_dependency "rubocop", "1.65.1"
 end