diff --git a/lib/active_record/connection_adapters/clickhouse/oid/map.rb b/lib/active_record/connection_adapters/clickhouse/oid/map.rb
index 6c6a1879..239d2734 100644
--- a/lib/active_record/connection_adapters/clickhouse/oid/map.rb
+++ b/lib/active_record/connection_adapters/clickhouse/oid/map.rb
@@ -33,7 +33,10 @@ def deserialize(value)
           def serialize(value)
             return '{}' if value.nil?
 
-            "{#{value.map { |k, v| "'#{k}': '#{v}'" }.join(', ')}}"
+            res = value.map { |k, v| "#{quote(k)}: #{quote(v)}" }.join(', ')
+            res = "{#{res}}"
+
+            res
           end
 
           private
@@ -48,10 +51,23 @@ def cast_type(type)
               :datetime
             when /Date/
               :date
+            when /Array\(*\)/
+              type
             else
               :string
             end
           end
+
+          def quote(value)
+            case value
+            when String, Symbol
+              "'#{value}'"
+            when ::Array
+              "[#{value.map { |v| quote(v) }.join(', ')}]"
+            else
+              value
+            end
+          end
         end
       end
     end
diff --git a/lib/active_record/connection_adapters/clickhouse_adapter.rb b/lib/active_record/connection_adapters/clickhouse_adapter.rb
index 8c98cf2c..8e036726 100644
--- a/lib/active_record/connection_adapters/clickhouse_adapter.rb
+++ b/lib/active_record/connection_adapters/clickhouse_adapter.rb
@@ -112,6 +112,8 @@ def cast_type(type)
           :datetime
         when /Date/
           :date
+        when /Array/
+          type
         else
           :string
         end
@@ -267,6 +269,8 @@ def quote(value)
         case value
         when Array
           '[' + value.map { |v| quote(v) }.join(', ') + ']'
+        when Hash
+          '{' + value.map { |k, v| "#{quote(k)}: #{quote(v)}" }.join(', ') + '}'
         else
           super
         end