diff --git a/README.md b/README.md
index 0c753594e4b6c043ac543f75c0e3c5bae4f38c9f..b2e490b7aba7fe0d231ca95568d399d7a4057508 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,6 @@ Install dependencies:
 
 ## Testing
 
-1. Run `pnpm build && node out.js test/test_transcripts test/out`
+1. Run `pnpm build && node out.js test/test_transcripts test/out -O test/test_old.json`
     - If you only want to test a single file, you also use `test/single_transcript` as input
 2. Open any file in test/out in your browser
diff --git a/src/index.ts b/src/index.ts
index 9b2e581affd02e0caec3ada02c6b541d8e74f091..0d61303ddf6a9ded2303b5297a2797f023154359 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -12,6 +12,7 @@ async function main() {
 		)
 		.argument("<outputDir>", "path to output the rendered html to")
 		.option("-A, --output-ast", "Also save the AST as a file", false)
+		.option("-O, --old-json [path]", "JSON file to take data about extra transcripts from")
 		.option("-B, --base-url [url]", "Basic URL for the RSS feed")
 		.action(run);
 	await program.parseAsync(process.argv);
@@ -53,18 +54,19 @@ async function run(inputDir: string, outputDir: string, options: CliOptions) {
 
 	// (4) Generate index page
 	let oldTranscripts: FinishedTranscriptMeta[] = [];
-	try {
-		// These are generated in the Sitzungen repo
-		const res = await fetch("https://fsr.oh14.de/protokolle/old.json");
-		oldTranscripts = (await res.json()).map(t => ({
-			// Fallback for some options:
-			spec_version: -1, // PDFs
-			no_link: false,
-			...t,
-		}));
-		console.log(oldTranscripts);
-	} catch (e) {
-		console.error("Failed to get old transcripts", e);
+	if (options.oldJson) {
+		try {
+			// These are generated in the Sitzungen repo
+			const res = await fs.readFile(options.oldJson, { encoding: 'utf8' })
+			oldTranscripts = JSON.parse(res).map(t => ({
+				// Fallback for some options:
+				spec_version: -1, // PDFs
+				no_link: false,
+				...t,
+			}));
+		} catch (e) {
+			console.error("Failed to get old transcripts", e);
+		}
 	}
 
 	const allTranscripts = [