diff --git a/generate-local.js b/generate-local.js
index 9d3ebee..5967e79 100644
--- a/generate-local.js
+++ b/generate-local.js
@@ -88,5 +88,6 @@ const runCmd = async (cmd, path) => {
 		'--version',
 		version,
 		'--ignorePreviouslyIndexedDoc',
+		'--no-sync'
 	]).stdout.pipe(process.stdout)
 })()
diff --git a/index.js b/index.js
index 7e4b44c..0d22b21 100644
--- a/index.js
+++ b/index.js
@@ -12,6 +12,7 @@ let specificDocsVersion = argv.version ? argv.version : ''
 let ignorePreviouslyIndexedDoc =
 	projects.length !== 0 && specificDocsVersion !== '' && argv.ignorePreviouslyIndexedDoc
 let runClean = !!argv.clean
+let noSync = !!argv.noSync
 
 const { apiDocsProcessor } = require('./main.js')
-apiDocsProcessor(projects, specificDocsVersion, ignorePreviouslyIndexedDoc, runClean)
+apiDocsProcessor(projects, specificDocsVersion, ignorePreviouslyIndexedDoc, runClean, noSync)
diff --git a/lib/read-docs.js b/lib/read-docs.js
index ddf12a8..7f74a79 100644
--- a/lib/read-docs.js
+++ b/lib/read-docs.js
@@ -33,9 +33,11 @@ export default function readDocs(
 		)
 
 		if (!runClean) {
-			availableSourceVersions = availableSourceVersions.filter(
-				version => !prevIndexedVersions.includes(version)
-			)
+			if (!ignorePreviouslyIndexedDoc) {
+				availableSourceVersions = availableSourceVersions.filter(
+					version => !prevIndexedVersions.includes(version)
+				)
+			}
 
 			folders = folders.filter(f => {
 				if (!prevIndexedVersions.includes(f) || ignorePreviouslyIndexedDoc) {
diff --git a/main.js b/main.js
index 37037da..9499691 100644
--- a/main.js
+++ b/main.js
@@ -14,11 +14,12 @@ import revProjVersionFiles from './lib/rev-docs'
 import { downloadExistingDocsToLocal, uploadDocsToS3 } from './lib/s3-sync'
 import fixBorkedYuidocFiles from './lib/fix-borked-yuidoc-files'
 
-export function apiDocsProcessor(
+export async function apiDocsProcessor(
 	projects,
 	specificDocsVersion,
 	ignorePreviouslyIndexedDoc,
-	runClean
+	runClean,
+	noSync
 ) {
 	RSVP.on('error', reason => {
 		console.log(reason)
@@ -28,13 +29,14 @@ export function apiDocsProcessor(
 	let docsVersionMsg = specificDocsVersion !== '' ? `. For version ${specificDocsVersion}` : ''
 	console.log(`Downloading docs for ${projects.join(' & ')}${docsVersionMsg}`)
 
-	downloadExistingDocsToLocal()
-		.then(() => fetchYuiDocs(projects, specificDocsVersion, ignorePreviouslyIndexedDoc || runClean))
-		.then(async filesToProcess => {
-			await fs.mkdirp('tmp/s3-original-docs')
-			return await RSVP.Promise.all(filesToProcess.map(fixBorkedYuidocFiles))
-		})
-		.then(() => readDocs(projects, specificDocsVersion, ignorePreviouslyIndexedDoc, runClean))
+	if (!noSync) {
+		await downloadExistingDocsToLocal()
+		let filesToProcess = await fetchYuiDocs(projects, specificDocsVersion, runClean)
+		await fs.mkdirp('tmp/s3-original-docs')
+		await RSVP.Promise.all(filesToProcess.map(fixBorkedYuidocFiles))
+	}
+
+	await readDocs(projects, specificDocsVersion, ignorePreviouslyIndexedDoc, runClean)
 		.then(docs => {
 			return RSVP.map(projects, projectName => {
 				return RSVP.map(docs[projectName], doc => {