diff --git a/lib/dialects/postgres/schema/pg-columncompiler.js b/lib/dialects/postgres/schema/pg-columncompiler.js
index a7cd3e32b..443f734b5 100644
--- a/lib/dialects/postgres/schema/pg-columncompiler.js
+++ b/lib/dialects/postgres/schema/pg-columncompiler.js
@@ -145,6 +145,7 @@ function jsonColumn(client, jsonb) {
   if (
     !client.version ||
     client.config.client === 'cockroachdb' ||
+    client.config.jsonbSupport === true ||
     parseFloat(client.version) >= 9.2
   ) {
     return jsonb ? 'jsonb' : 'json';
diff --git a/test/unit/schema-builder/postgres.js b/test/unit/schema-builder/postgres.js
index a77f68c7a..1e91a8101 100644
--- a/test/unit/schema-builder/postgres.js
+++ b/test/unit/schema-builder/postgres.js
@@ -93,6 +93,41 @@ describe('PostgreSQL Config', function () {
         );
       });
     });
+
+    describe('check custom pg client', function () {
+      it('jsonb as text', function () {
+        knexInstance = knex({
+          ...config,
+          version: 'custom-pg',
+          jsonbSupport: false,
+        });
+        tableSql = knexInstance.schema
+          .table('public', function (t) {
+            t.jsonb('test_name');
+          })
+          .toSQL();
+        equal(1, tableSql.length);
+        expect(tableSql[0].sql).to.equal(
+          'alter table "public" add column "test_name" text'
+        );
+      });
+      it('jsonb', function () {
+        knexInstance = knex({
+          ...config,
+          version: 'custom-pg',
+          jsonbSupport: true,
+        });
+        tableSql = knexInstance.schema
+          .table('public', function (t) {
+            t.jsonb('test_name');
+          })
+          .toSQL();
+        equal(1, tableSql.length);
+        expect(tableSql[0].sql).to.equal(
+          'alter table "public" add column "test_name" jsonb'
+        );
+      });
+    });
   });
 });
 
diff --git a/types/index.d.ts b/types/index.d.ts
index c352a6593..17de2e555 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -2699,6 +2699,7 @@ export declare namespace Knex {
     debug?: boolean;
     client?: string | typeof Client;
     dialect?: string;
+    jsonbSupport?: boolean;
     version?: string;
     connection?: string | StaticConnectionConfig | ConnectionConfigProvider;
     pool?: PoolConfig;