diff --git a/operation_test.go b/operation_test.go
index 0e24d6c9d..aa77a8325 100644
--- a/operation_test.go
+++ b/operation_test.go
@@ -1619,6 +1619,7 @@ func TestParseParamCommentByFormDataTypeUint64(t *testing.T) {
 	expected := `[
     {
         "type": "integer",
+        "format": "int64",
         "description": "this is a test file",
         "name": "file",
         "in": "formData",
diff --git a/parser_test.go b/parser_test.go
index f0ca3b9c4..777d411f7 100644
--- a/parser_test.go
+++ b/parser_test.go
@@ -1332,7 +1332,8 @@ func TestParseSimpleApi_ForSnakecase(t *testing.T) {
                     "type": "integer"
                 },
                 "err": {
-                    "type": "integer"
+                    "type": "integer",
+                    "format": "int32"
                 },
                 "status": {
                     "type": "boolean"
@@ -1788,7 +1789,8 @@ func TestParseSimpleApi_ForLowerCamelcase(t *testing.T) {
                     "type": "integer"
                 },
                 "err": {
-                    "type": "integer"
+                    "type": "integer",
+                    "format": "int32"
                 },
                 "status": {
                     "type": "boolean"
@@ -1947,7 +1949,8 @@ func TestParseStructComment(t *testing.T) {
                 },
                 "errorNo": {
                     "description": "Error ` + "`" + `number` + "`" + ` tick comment",
-                    "type": "integer"
+                    "type": "integer",
+                    "format": "int64"
                 }
             }
         }
diff --git a/testdata/generics_basic/expected.json b/testdata/generics_basic/expected.json
index 58689cf74..4dc8819c8 100644
--- a/testdata/generics_basic/expected.json
+++ b/testdata/generics_basic/expected.json
@@ -354,7 +354,8 @@
                 "originMapField": {
                     "type": "object",
                     "additionalProperties": {
-                        "type": "number"
+                        "type": "number",
+                        "format": "float64"
                     }
                 }
             }
@@ -362,7 +363,8 @@
         "types.MapField-string-float64": {
             "type": "object",
             "additionalProperties": {
-                "type": "number"
+                "type": "number",
+                "format": "float64"
             }
         },
         "types.MapFieldNestedStruct-string": {
@@ -375,7 +377,8 @@
             "type": "object",
             "properties": {
                 "f": {
-                    "type": "number"
+                    "type": "number",
+                    "format": "float64"
                 },
                 "s": {
                     "type": "string"
@@ -431,7 +434,8 @@
                 },
                 "errorNo": {
                     "description": "Error `number` tick comment",
-                    "type": "integer"
+                    "type": "integer",
+                    "format": "int64"
                 }
             }
         },
diff --git a/testdata/generics_names/expected.json b/testdata/generics_names/expected.json
index 5da1de542..e363892df 100644
--- a/testdata/generics_names/expected.json
+++ b/testdata/generics_names/expected.json
@@ -304,7 +304,8 @@
                 },
                 "errorNo": {
                     "description": "Error `number` tick comment",
-                    "type": "integer"
+                    "type": "integer",
+                    "format": "int64"
                 }
             }
         },
diff --git a/testdata/generics_property/expected.json b/testdata/generics_property/expected.json
index fe67258a1..7d8858f20 100644
--- a/testdata/generics_property/expected.json
+++ b/testdata/generics_property/expected.json
@@ -153,7 +153,8 @@
                     }
                 },
                 "items2": {
-                    "type": "integer"
+                    "type": "integer",
+                    "format": "int32"
                 },
                 "post": {
                     "$ref": "#/definitions/types.Field-array_types_Post"
@@ -444,7 +445,8 @@
                     }
                 },
                 "items2": {
-                    "type": "integer"
+                    "type": "integer",
+                    "format": "int32"
                 }
             }
         }