diff --git a/test-tsd/pg-config.test-d.ts b/test-tsd/pg-config.test-d.ts
new file mode 100644
index 0000000000..b448941284
--- /dev/null
+++ b/test-tsd/pg-config.test-d.ts
@@ -0,0 +1,30 @@
+import { expectAssignable } from 'tsd';
+
+import {Knex} from '../types';
+import * as stream from "stream";
+
+const connectionConfig: Knex.PgConnectionConfig = {
+  user: '',
+  database: '',
+  password: '',
+  port: 1,
+  host: '',
+  connectionString: '',
+  keepAlive: true,
+  stream: new stream.Duplex(),
+  statement_timeout: false,
+  parseInputDatesAsUTC: false,
+  ssl: true,
+  query_timeout: 2,
+  keepAliveInitialDelayMillis: 3,
+  idle_in_transaction_session_timeout: 4,
+  application_name: '',
+  connectionTimeoutMillis: 5,
+  types: {
+    getTypeParser: () => {},
+  },
+  options: '',
+  expirationChecker: () => {return true;},
+};
+
+expectAssignable<Knex.PgConnectionConfig>(connectionConfig);