diff --git a/.changeset/lemon-bags-tan.md b/.changeset/lemon-bags-tan.md
new file mode 100644
index 00000000000..6e0b3d3d2ca
--- /dev/null
+++ b/.changeset/lemon-bags-tan.md
@@ -0,0 +1,5 @@
+---
+"@atproto/common-web": patch
+---
+
+ponyfill URL.canParse
diff --git a/packages/common-web/src/did-doc.ts b/packages/common-web/src/did-doc.ts
index fb45010e8cc..d96eb8acf52 100644
--- a/packages/common-web/src/did-doc.ts
+++ b/packages/common-web/src/did-doc.ts
@@ -145,13 +145,25 @@ const validateUrl = (urlStr: string): string | undefined => {
     return undefined
   }
 
-  if (!URL.canParse(urlStr)) {
+  if (!canParseUrl(urlStr)) {
     return undefined
   }
 
   return urlStr
 }
 
+const canParseUrl =
+  URL.canParse ??
+  // URL.canParse is not available in Node.js < 18.17.0
+  ((urlStr: string): boolean => {
+    try {
+      new URL(urlStr)
+      return true
+    } catch {
+      return false
+    }
+  })
+
 // Types
 // --------