diff --git a/.changeset/forty-eggs-raise.md b/.changeset/forty-eggs-raise.md
new file mode 100644
index 000000000000..0278a97d031b
--- /dev/null
+++ b/.changeset/forty-eggs-raise.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/partytown': patch
+---
+
+Allows overriding the `lib` option
diff --git a/packages/integrations/partytown/src/index.ts b/packages/integrations/partytown/src/index.ts
index 755026512399..cfe1293c995d 100644
--- a/packages/integrations/partytown/src/index.ts
+++ b/packages/integrations/partytown/src/index.ts
@@ -27,8 +27,8 @@ export default function createPlugin(options?: PartytownOptions): AstroIntegrati
 			'astro:config:setup': ({ config: _config, command, injectScript }) => {
 				const lib = `${appendForwardSlash(_config.base)}~partytown/`;
 				const partytownConfig = {
-					...options?.config,
 					lib,
+					...options?.config,
 					debug: options?.config?.debug ?? command === 'dev',
 				};
 				partytownSnippetHtml = partytownSnippet(partytownConfig);