diff --git a/src/utils.ts b/src/utils.ts
index 1828553..c30fdbc 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -7,16 +7,13 @@ const combineUrls = (piece1: string, piece2: string): string => {
 };
 
 const isValidURL = (str: string): boolean => {
-  const pattern = new RegExp(
-    "^(https?:\\/\\/)?" + // protocol
-      "((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|" + // domain name
-      "((\\d{1,3}\\.){3}\\d{1,3}))" + // OR ip (v4) address
-      "(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*" + // port and path
-      "(\\?[;&a-z\\d%_.~+=-]*)?" + // query string
-      "(\\#[-a-z\\d_]*)?$",
-    "i"
-  ); // fragment locater
-  return !!pattern.test(str);
+  let url;
+  try {
+    url = new URL(str);
+  } catch (_) {
+    return false;
+  }
+  return url.protocol === "http:" || url.protocol === "https:";
 };
 
 export { combineUrls, isValidURL };