diff --git a/cli/packages/graphcool-cli-core/src/commands/import/Validator.test.ts b/cli/packages/graphcool-cli-core/src/commands/import/Validator.test.ts
index 1ec3c944a..fdb437ba6 100644
--- a/cli/packages/graphcool-cli-core/src/commands/import/Validator.test.ts
+++ b/cli/packages/graphcool-cli-core/src/commands/import/Validator.test.ts
@@ -129,6 +129,26 @@ describe('Validator', () => {
         }),
       ).toBe(true)
     })
+    
+    test('Json', () => {
+      const types = `
+      type Post {
+        id: ID!
+        json: Json!
+      }
+    `
+      const validator = new Validator(types)
+      expect(() =>
+        validator.validateNode({ _typeName: 'Post', id: '25', Json: '' }),
+      ).toThrow()
+      expect(
+        validator.validateNode({
+          _typeName: 'Post',
+          id: '25',
+          date: '{"test": "json"}',
+        }),
+      ).toBe(true)
+    })
 
     test('Int', () => {
       const types = `
diff --git a/cli/packages/graphcool-cli-core/src/commands/import/Validator.ts b/cli/packages/graphcool-cli-core/src/commands/import/Validator.ts
index fef8ac80b..bf9fdb4f0 100644
--- a/cli/packages/graphcool-cli-core/src/commands/import/Validator.ts
+++ b/cli/packages/graphcool-cli-core/src/commands/import/Validator.ts
@@ -59,6 +59,7 @@ export class Validator {
         )
       )
     },
+    Json: () => true,
     Boolean: isBoolean,
   }
   constructor(typesString: string) {