diff --git a/CHANGELOG.md b/CHANGELOG.md
index 481a829..e5b298c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 ## Unreleased
 
+### Added
+- Added support for nested search fields using dot notation in Payrix search query builder (e.g. `merchant.entity.login.division`)
+
+### Changed
+- Increased Payrix API timeout to 60 seconds to improve reliability for slower requests
+
 ### Breaking Changes
 
 - Change API for setting request environment.
diff --git a/Gemfile.lock b/Gemfile.lock
index 99bbbfc..c94131a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    payrix (1.0.0)
+    payrix (1.1.0)
       faraday (~> 2.0.1)
       faraday-follow_redirects
 
diff --git a/README.md b/README.md
index d1ddd73..4d76afe 100644
--- a/README.md
+++ b/README.md
@@ -99,6 +99,8 @@ Here is a list of all simple operators available.
 - `Payrix::Search.greater`
 - `Payrix::Search.less`
 
+> Note: Field names can be provided as either symbols (`:status`) or dot-notation strings (`'merchant.entity.login.division'`) when querying nested attributes.
+
 The interface of all operators follows `.operator(:field, value)`.
 
 Use compound operators to make combinations of simple and other compound operators.
diff --git a/lib/payrix/http/request.rb b/lib/payrix/http/request.rb
index 7c1d431..02e388a 100644
--- a/lib/payrix/http/request.rb
+++ b/lib/payrix/http/request.rb
@@ -11,7 +11,7 @@ module Http
     class Request # rubocop:disable Style/Documentation - Legacy file, which will be removed eventually
       include Singleton
 
-      def send_http(method, base_url, endpoint, data = {}, headers = {}, timeout = 30)
+      def send_http(method, base_url, endpoint, data = {}, headers = {}, timeout = 60)
         conn = Faraday.new(url: base_url) do |connection|
           connection.response :follow_redirects, limit: 3
 
diff --git a/lib/payrix/request_options/search/atom.rb b/lib/payrix/request_options/search/atom.rb
index 69ae95f..145bbb1 100644
--- a/lib/payrix/request_options/search/atom.rb
+++ b/lib/payrix/request_options/search/atom.rb
@@ -22,12 +22,14 @@ def initialize(field, operator, value)
         def construct(prefix = '')
           raise ArgumentError, 'Prefix parameter must be a string' unless prefix.is_a?(String)
 
-          field = Payrix::Util.camel_case(@field.to_s)
+          formatted_field = rendered_field(prefix)
 
-          if prefix == ''
-            "#{field}[#{@operator}]=#{@value}"
+          if prefix.empty?
+            "#{formatted_field}[#{@operator}]=#{@value}"
+          elsif formatted_field.start_with?('[')
+            "#{prefix}#{formatted_field}[#{@operator}]=#{@value}"
           else
-            "#{prefix}[#{field}][#{@operator}]=#{@value}"
+            "#{prefix}[#{formatted_field}][#{@operator}]=#{@value}"
           end
         end
 
@@ -35,9 +37,16 @@ def construct(prefix = '')
 
         def validate_field
           return if @field.is_a?(Symbol)
-          return if @field.is_a?(String) && @field != ''
+          raise ArgumentError, 'Field parameter must be a symbol or a non-empty string' unless valid_string_field?
+          raise ArgumentError, 'Field parameter must not contain empty dot notation segments' if empty_dot_segment?
+        end
+
+        def valid_string_field?
+          @field.is_a?(String) && @field != ''
+        end
 
-          raise ArgumentError, 'Field parameter must be a symbol or a non-empty string'
+        def empty_dot_segment?
+          @field.include?('.') && @field.split('.').any?(&:empty?)
         end
 
         def validate_operator
@@ -52,6 +61,20 @@ def validate_value
 
           raise ArgumentError, 'Value parameter must be a non-empty string'
         end
+
+        def rendered_field(prefix)
+          return Payrix::Util.camel_case(@field.to_s) unless @field.is_a?(String) && @field.include?('.')
+
+          dot_field(prefix.empty?)
+        end
+
+        def dot_field(unprefixed)
+          parts = @field.split('.').map { |part| Payrix::Util.camel_case(part) }
+
+          return parts.map { |part| "[#{part}]" }.join unless unprefixed
+
+          [parts.first, *parts.drop(1).map { |part| "[#{part}]" }].join
+        end
       end
     end
   end
diff --git a/lib/payrix/version.rb b/lib/payrix/version.rb
index ea7aed4..f436739 100644
--- a/lib/payrix/version.rb
+++ b/lib/payrix/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Payrix
-  VERSION = '1.0.0'
+  VERSION = '1.1.0'
 end
diff --git a/spec/lib/payrix/request_options/search/atom_spec.rb b/spec/lib/payrix/request_options/search/atom_spec.rb
index c9f4ac4..e67835b 100644
--- a/spec/lib/payrix/request_options/search/atom_spec.rb
+++ b/spec/lib/payrix/request_options/search/atom_spec.rb
@@ -38,6 +38,18 @@
       end
     end
 
+    context 'when the field is dot notation with empty segments at the beginning' do
+      it 'raises ArgumentError' do
+        expect { described_class.new('.field', :operator, 'value') }.to raise_error(ArgumentError)
+      end
+    end
+
+    context 'when the field is dot notation with empty segments at middle' do
+      it 'raises ArgumentError' do
+        expect { described_class.new('a..field', :operator, 'value') }.to raise_error(ArgumentError)
+      end
+    end
+
     context 'when the operator is nil' do
       it 'raises ArgumentError' do
         expect { described_class.new(:field, nil, 'value') }.to raise_error(ArgumentError)
@@ -251,5 +263,20 @@
         expect { atom.construct({}) }.to raise_error(ArgumentError)
       end
     end
+
+    context 'when the field is a dotted string' do
+      it 'returns a valid nested search argument' do
+        atom = described_class.new('a.field', :operator, 'value')
+
+        expect(atom.construct).to eq('a[field][operator]=value')
+      end
+    end
+
+    context 'when the field is a dotted string and the prefix is a non-empty string' do
+      it 'returns a valid nested search argument with a prefix' do
+        atom = described_class.new('a.field', :operator, 'value')
+        expect(atom.construct('prefix')).to eq('prefix[a][field][operator]=value')
+      end
+    end
   end
 end