diff --git a/lib/objects/table/change-rules.js b/lib/objects/table/change-rules.js
index 743c2ec..005b362 100644
--- a/lib/objects/table/change-rules.js
+++ b/lib/objects/table/change-rules.js
@@ -90,6 +90,10 @@ exports.isColumnModificationAllowed = (prev, next) => {
       return true;
     }
 
+    case validate(Types.json, [Types.jsonb]): {
+      return true;
+    }
+
     default:
       return false;
   }
diff --git a/lib/types.js b/lib/types.js
index 3a73719..36557c3 100644
--- a/lib/types.js
+++ b/lib/types.js
@@ -24,6 +24,8 @@ const DataTypes = {
   timeTZ: 'time with time zone',
   timeStamp: 'timestamp without time zone',
   timeStampTZ: 'timestamp with time zone',
+  json: 'json',
+  jsonb: 'jsonb',
 };
 
 const _placeholders = {
diff --git a/test/synchronization/column/type.test.js b/test/synchronization/column/type.test.js
index a041c53..2a7563a 100644
--- a/test/synchronization/column/type.test.js
+++ b/test/synchronization/column/type.test.js
@@ -73,6 +73,10 @@ describe('column.type', () => {
       to: ['numeric(24)[][]'],
       forbidden: true,
     },
+    {
+      from: 'json',
+      to: ['jsonb'],
+    },
   ].forEach(({ from: prevType, to: types, forbidden }) => {
     const table = 'DifferSchema.users';
     const column = 'birthday';