diff --git a/src/index.ts b/src/index.ts
index 1266bb3..00b0a01 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -45,10 +45,23 @@ function buildHeader (db: Database, tables: string[], schema: string|null, optio
     `
 }
 
-export async function typescriptOfTable (db: Database|string, 
-                                         table: string,
-                                         schema: string,
-                                         options = new Options()) {
+/**
+ * Define common interfaces used for db column types (eg : Json) 
+ */
+function getCommonInterfaces(): string {
+
+    return `
+    interface JsonParsed {
+            [k: string]: string | number | boolean | Date | JsonParsed | JsonParsedArray;
+        }
+    interface JsonParsedArray extends Array<string | number | boolean | Date | JsonParsed | JsonParsedArray> { }
+    `
+}
+
+export async function typescriptOfTable(db: Database | string,
+    table: string,
+    schema: string,
+    options = new Options()) {
     if (typeof db === 'string') {
         db = getDatabase(db)
     }
@@ -87,6 +100,7 @@ export async function typescriptOfSchema (db: Database|string,
     if (optionsObject.options.writeHeader) {
         output += buildHeader(db, tables, schema, options)
     }
+    output += getCommonInterfaces()
     output += enumTypes
     output += interfaces
 
diff --git a/src/schemaMysql.ts b/src/schemaMysql.ts
index f5beff1..cff874f 100644
--- a/src/schemaMysql.ts
+++ b/src/schemaMysql.ts
@@ -53,7 +53,7 @@ export class MysqlDatabase implements Database {
                     column.tsType = 'boolean'
                     return column
                 case 'json':
-                    column.tsType = 'Object'
+                    column.tsType = 'JsonParsed'
                     return column
                 case 'date':
                 case 'datetime':
diff --git a/src/schemaPostgres.ts b/src/schemaPostgres.ts
index 2acceb9..79a67fb 100644
--- a/src/schemaPostgres.ts
+++ b/src/schemaPostgres.ts
@@ -46,7 +46,7 @@ export class PostgresDatabase implements Database {
                     return column
                 case 'json':
                 case 'jsonb':
-                    column.tsType = 'Object'
+                    column.tsType = 'JsonParsed'
                     return column
                 case 'date':
                 case 'timestamp':
@@ -74,7 +74,7 @@ export class PostgresDatabase implements Database {
                     return column
                 case '_json':
                 case '_jsonb':
-                    column.tsType = 'Array<Object>'
+                    column.tsType = 'Array<JsonParsed>'
                     return column
                 case '_timestamptz':
                     column.tsType = 'Array<Date>'
diff --git a/test/expected/postgres/osm.ts b/test/expected/postgres/osm.ts
index 8c59518..75acd88 100644
--- a/test/expected/postgres/osm.ts
+++ b/test/expected/postgres/osm.ts
@@ -42,7 +42,7 @@ export namespace usersFields {
     export type char_col = string | null;
     export type time_col = string | null;
     export type inet_col = string | null;
-    export type jsonb_col = Object | null;
+    export type jsonb_col = JsonParsed | null;
     export type numeric_col = number | null;
     export type bytea_col = string | null;
     export type bool_array_col = Array<boolean> | null;
@@ -58,12 +58,12 @@ export namespace usersFields {
     export type time_with_tz = string | null;
     export type oid_col = number | null;
     export type interval_col = string | null;
-    export type json_col = Object | null;
+    export type json_col = JsonParsed | null;
     export type date_col = Date | null;
     export type unspported_path_type = any | null;
     export type name_type_col = string | null;
-    export type json_array_col = Array<Object> | null;
-    export type jsonb_array_col = Array<Object> | null;
+    export type json_array_col = Array<JsonParsed> | null;
+    export type jsonb_array_col = Array<JsonParsed> | null;
     export type timestamptz_array_col = Array<Date> | null;
 
 }
diff --git a/test/unit/schemaMysql.test.ts b/test/unit/schemaMysql.test.ts
index 2b33878..4aa5dee 100644
--- a/test/unit/schemaMysql.test.ts
+++ b/test/unit/schemaMysql.test.ts
@@ -398,7 +398,7 @@ describe('MysqlDatabase', () => {
                         nullable: false
                     }
                 }
-                assert.equal(MysqlDBReflection.mapTableDefinitionToType(td,[],options).column.tsType, 'Object')
+                assert.equal(MysqlDBReflection.mapTableDefinitionToType(td, [], options).column.tsType, 'JsonParsed')
             })
         })
         describe('maps to Date', () => {
diff --git a/test/unit/schemaPostgres.test.ts b/test/unit/schemaPostgres.test.ts
index f8faa16..098b6fc 100644
--- a/test/unit/schemaPostgres.test.ts
+++ b/test/unit/schemaPostgres.test.ts
@@ -350,7 +350,7 @@ describe('PostgresDatabase', () => {
                         nullable: false
                     }
                 }
-                assert.equal(PostgresDBReflection.mapTableDefinitionToType(td,[],options).column.tsType, 'Object')
+                assert.equal(PostgresDBReflection.mapTableDefinitionToType(td, [], options).column.tsType, 'JsonParsed')
             })
             it('jsonb', () => {
                 const td: TableDefinition = {
@@ -359,7 +359,7 @@ describe('PostgresDatabase', () => {
                         nullable: false
                     }
                 }
-                assert.equal(PostgresDBReflection.mapTableDefinitionToType(td,[],options).column.tsType, 'Object')
+                assert.equal(PostgresDBReflection.mapTableDefinitionToType(td, [], options).column.tsType, 'JsonParsed')
             })
         })
         describe('maps to Date', () => {
@@ -523,7 +523,7 @@ describe('PostgresDatabase', () => {
                         nullable: false
                     }
                 }
-                assert.equal(PostgresDBReflection.mapTableDefinitionToType(td,[],options).column.tsType, 'Array<Object>')
+                assert.equal(PostgresDBReflection.mapTableDefinitionToType(td, [], options).column.tsType, 'Array<JsonParsed>')
             })
             it('_jsonb', () => {
                 const td: TableDefinition = {
@@ -532,7 +532,7 @@ describe('PostgresDatabase', () => {
                         nullable: false
                     }
                 }
-                assert.equal(PostgresDBReflection.mapTableDefinitionToType(td,[],options).column.tsType, 'Array<Object>')
+                assert.equal(PostgresDBReflection.mapTableDefinitionToType(td, [], options).column.tsType, 'Array<JsonParsed>')
             })
         })