diff --git a/src/parse.ts b/src/parse.ts
index 2e85f9ce..6459d538 100644
--- a/src/parse.ts
+++ b/src/parse.ts
@@ -16,7 +16,7 @@ export interface ParsedAuth {
 
 export interface ParsedHost {
   hostname: string;
-  port: string;
+  port: number;
 }
 
 export function parseURL(input = "", defaultProto?: string): ParsedURL {
@@ -68,7 +68,7 @@ export function parseHost(input = ""): ParsedHost {
   const [hostname, port] = (input.match(/([^/:]*):?(\d+)?/) || []).splice(1);
   return {
     hostname: decode(hostname),
-    port,
+    port: port ? Number.parseInt(port) : undefined,
   };
 }
 
diff --git a/test/parse.test.ts b/test/parse.test.ts
index 8ee7fedb..a6147b30 100644
--- a/test/parse.test.ts
+++ b/test/parse.test.ts
@@ -92,7 +92,7 @@ describe("parseURL", () => {
 
 describe("parseHost", () => {
   const tests = [
-    { input: "localhost:3000", out: { hostname: "localhost", port: "3000" } },
+    { input: "localhost:3000", out: { hostname: "localhost", port: 3000 } },
     { input: "google.com", out: { hostname: "google.com", port: undefined } },
   ];