diff --git a/rswag-specs/lib/rswag/specs/example_group_helpers.rb b/rswag-specs/lib/rswag/specs/example_group_helpers.rb
index d66a122..812e283 100644
--- a/rswag-specs/lib/rswag/specs/example_group_helpers.rb
+++ b/rswag-specs/lib/rswag/specs/example_group_helpers.rb
@@ -131,11 +131,6 @@ module Rswag
           attributes[:required] = true
         end
 
-        ## IF OA3
-        # if attributes[:type] && attributes[:schema].nil?
-        #   attributes[:schema] = {type: attributes[:type]}
-        # end
-
         if metadata.has_key?(:operation)
           metadata[:operation][:parameters] ||= []
           metadata[:operation][:parameters] << attributes
@@ -164,7 +159,7 @@ module Rswag
 
         ## OA3
         # if attributes[:type] && attributes[:schema].nil?
-        #   attributes[:schema] = {type: attributes[:type]}
+        #   attributes[:schema] = { type: attributes[:type] }
         #   attributes.delete(:type)
         # end
 
diff --git a/rswag-specs/lib/rswag/specs/swagger_formatter.rb b/rswag-specs/lib/rswag/specs/swagger_formatter.rb
index 0faf9cf..a11a69c 100644
--- a/rswag-specs/lib/rswag/specs/swagger_formatter.rb
+++ b/rswag-specs/lib/rswag/specs/swagger_formatter.rb
@@ -33,12 +33,16 @@ module Rswag
         return unless metadata.has_key?(:response)
 
         swagger_doc = @config.get_swagger_doc(metadata[:swagger_doc])
+
+        if doc_version(swagger_doc).starts_with?('3')
+          upgrade_request_type!(metadata)
+        end
+
         swagger_doc.deep_merge!(metadata_to_swagger(metadata))
       end
 
       def stop(_notification=nil)
         @config.swagger_docs.each do |url_path, doc|
-
           ## OA3
           # # remove 2.0 parameters
           # doc[:paths]&.each_pair do |_k, v|
@@ -115,6 +119,22 @@ module Rswag
 
         { paths: { path_template => path_item } }
       end
+
+      def doc_version(doc)
+        doc[:openapi] || doc[:swagger] || '3'
+      end
+
+      def upgrade_request_type!(metadata)
+        operation_nodes = metadata[:operation][:parameters] || []
+        path_nodes = metadata[:path_item][:parameters] || []
+
+        (operation_nodes + path_nodes).each do |node|
+          if node && node[:type] && node[:schema].nil?
+            node[:schema] = { type: node[:type] }
+            node.delete(:type)
+          end
+        end
+      end
     end
   end
 end
diff --git a/rswag-specs/spec/rswag/specs/swagger_formatter_spec.rb b/rswag-specs/spec/rswag/specs/swagger_formatter_spec.rb
index d7e05b1..4ab7777 100644
--- a/rswag-specs/spec/rswag/specs/swagger_formatter_spec.rb
+++ b/rswag-specs/spec/rswag/specs/swagger_formatter_spec.rb
@@ -22,12 +22,12 @@ module Rswag
           allow(config).to receive(:get_swagger_doc).and_return(swagger_doc)
           subject.example_group_finished(notification)
         end
-        let(:swagger_doc) { {} }
+        let(:swagger_doc) { { swagger: '2.0' } }
         let(:notification) { OpenStruct.new(group: OpenStruct.new(metadata: api_metadata)) }
         let(:api_metadata) do
           {
-            path_item: { template: '/blogs' },
-            operation: { verb: :post, summary: 'Creates a blog' },
+            path_item: { template: '/blogs', parameters: [{ type: :string }] },
+            operation: { verb: :post, summary: 'Creates a blog', parameters: [{ type: :string }] },
             response: { code: '201', description: 'blog created' },
             document: document
           }
@@ -37,7 +37,7 @@ module Rswag
           let(:document) { false }
 
           it 'does not update the swagger doc' do
-            expect(swagger_doc).to be_empty
+            expect(swagger_doc).to match({ swagger: '2.0' })
           end
         end
 
@@ -47,9 +47,35 @@ module Rswag
 
           it 'converts to swagger and merges into the corresponding swagger doc' do
             expect(swagger_doc).to match(
+              swagger: '2.0',
               paths: {
                 '/blogs' => {
+                  parameters: [{ type: :string }],
                   post: {
+                    parameters: [{ type: :string }],
+                    summary: 'Creates a blog',
+                    responses: {
+                      '201' => { description: 'blog created' }
+                    }
+                  }
+                }
+              }
+            )
+          end
+        end
+
+        context 'upgrades to 3.0' do
+          let(:swagger_doc) { { openapi: '3.0.1'} }
+          let(:document) { nil }
+
+          it 'converts query and path params, type: to schema: { type: }' do
+            expect(swagger_doc).to match(
+              openapi: '3.0.1',
+              paths: {
+                '/blogs' => {
+                  parameters: [{ schema: { type: :string } }],
+                  post: {
+                    parameters: [{ schema: { type: :string } }],
                     summary: 'Creates a blog',
                     responses: {
                       '201' => { description: 'blog created' }
diff --git a/test-app/swagger/v1/swagger.json b/test-app/swagger/v1/swagger.json
index 5deaf19..fd380a8 100644
--- a/test-app/swagger/v1/swagger.json
+++ b/test-app/swagger/v1/swagger.json
@@ -129,7 +129,9 @@
           {
             "name": "keywords",
             "in": "query",
-            "type": "string"
+            "schema": {
+              "type": "string"
+            }
           }
         ],
         "responses": {
@@ -144,8 +146,10 @@
         {
           "name": "id",
           "in": "path",
-          "type": "string",
-          "required": true
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
         }
       ],
       "get": {
@@ -195,8 +199,10 @@
         {
           "name": "id",
           "in": "path",
-          "type": "string",
-          "required": true
+          "required": true,
+          "schema": {
+            "type": "string"
+          }
         }
       ],
       "put": {
@@ -213,8 +219,10 @@
           {
             "name": "file",
             "in": "formData",
-            "type": "file",
-            "required": true
+            "required": true,
+            "schema": {
+              "type": "file"
+            }
           }
         ],
         "responses": {