diff --git a/lib/src/client_options.dart b/lib/src/client_options.dart
index eff0bae..d5b5b56 100644
--- a/lib/src/client_options.dart
+++ b/lib/src/client_options.dart
@@ -1,6 +1,7 @@
 import 'dart:js_interop';
 import 'dart:js_util';
 
+import 'package:deno_postgres_interop/src/partial_connection_options.dart';
 import 'package:deno_postgres_interop/src/transport.dart';
 
 /// [deno-postgres@v0.17.0/ClientOptions](https://deno.land/x/postgres@v0.17.0/mod.ts?s=ClientOptions).
@@ -25,7 +26,7 @@ class ClientOptions {
 /// [deno-postgres@v0.17.0/ClientOptions](https://deno.land/x/postgres@v0.17.0/mod.ts?s=ClientOptions).
 extension ClientOptionsProps on ClientOptions {
   /// [deno-postgres@v0.17.0/ClientOptions/connection](https://deno.land/x/postgres@v0.17.0/mod.ts?s=ClientOptions#prop_connection).
-  // external Partial<ConnectionOptions> get connection;
+  external PartialConnectionOptions get connection;
 
   /// [deno-postgres@v0.17.0/ClientOptions/host_type](https://deno.land/x/postgres@v0.17.0/mod.ts?s=ClientOptions#prop_host_type).
   Transport get hostType => Transport.parse(getProperty(this, 'host_type'));
diff --git a/lib/src/partial_connection_options.dart b/lib/src/partial_connection_options.dart
new file mode 100644
index 0000000..96a2b79
--- /dev/null
+++ b/lib/src/partial_connection_options.dart
@@ -0,0 +1,12 @@
+import 'dart:js_interop';
+
+/// [deno-postgres@v0.17.0/ConnectionOptions](https://deno.land/x/postgres@v0.17.0/mod.ts?s=ConnectionOptions)
+/// but [partial](https://www.typescriptlang.org/docs/handbook/utility-types.html#partialtype) (everything is optional).
+@JS()
+class PartialConnectionOptions {
+  /// [deno-postgres@v0.17.0/ConnectionOptions/attempts](https://deno.land/x/postgres@v0.17.0/mod.ts?s=ConnectionOptions#prop_attempts).
+  external int? get attempts;
+
+  /// [deno-postgres@v0.17.0/ConnectionOptions/interval](https://deno.land/x/postgres@v0.17.0/mod.ts?s=ConnectionOptions#interval).
+  // external int? get interval;
+}