diff --git a/apps/img/src/img.app.ts b/apps/img/src/img.app.ts
index 33395c7..7d9cc6b 100644
--- a/apps/img/src/img.app.ts
+++ b/apps/img/src/img.app.ts
@@ -31,7 +31,7 @@ const CACHE_CONTROL = `public, max-age=${86400 * 30}, immutable`
  * number of distinct variants an attacker can request, so they can't blow past
  * the edge cache and force the (expensive) WASM resize on every hit.
  */
-const ALLOWED_DIMENSIONS = new Set([128, 256, 512, 1024])
+const ALLOWED_DIMENSIONS = new Set([64, 128, 256, 512, 1024])
 
 /** JPEG quality used when re-encoding a resized image. */
 const RESIZE_JPEG_QUALITY = 90
@@ -420,10 +420,10 @@ app.get(
 				in: 'query',
 				required: false,
 				description: [
-					'Output width. Only 128, 256, 512 or 1024 are honoured — any other value is',
+					'Output width. Only 64, 128, 256, 512 or 1024 are honoured — any other value is',
 					'ignored and the source served untouched. Given alone, height follows the aspect ratio.',
 				].join(' '),
-				schema: { type: 'integer', enum: [128, 256, 512, 1024], example: 512 },
+				schema: { type: 'integer', enum: [64, 128, 256, 512, 1024], example: 512 },
 			},
 			{
 				name: 'height',
@@ -431,7 +431,7 @@ app.get(
 				required: false,
 				description:
 					'Output height, same allowed set as `width`. Given alone, width follows the aspect ratio.',
-				schema: { type: 'integer', enum: [128, 256, 512, 1024], example: 512 },
+				schema: { type: 'integer', enum: [64, 128, 256, 512, 1024], example: 512 },
 			},
 			{
 				name: 'cropSquare',
diff --git a/apps/img/src/test/integration/api.test.ts b/apps/img/src/test/integration/api.test.ts
index be7953a..523771a 100644
--- a/apps/img/src/test/integration/api.test.ts
+++ b/apps/img/src/test/integration/api.test.ts
@@ -128,6 +128,13 @@ describe('img endpoints', () => {
 		expect(jpegSize(new Uint8Array(await res.arrayBuffer())).width).toBe(128)
 	})
 
+	it('honours the 64 width some newer endpoints request', async () => {
+		const res = await SELF.fetch(`${ORIGIN}/3DCharades.jpg?width=64`)
+		expect(res.status).toBe(200)
+		expect(res.headers.get('content-type')).toBe('image/jpeg')
+		expect(jpegSize(new Uint8Array(await res.arrayBuffer())).width).toBe(64)
+	})
+
 	it('serves a static asset in preference to an R2 object of the same key', async () => {
 		const res = await SELF.fetch(`${ORIGIN}/3DCharades.jpg`)
 		expect(res.status).toBe(200)
@@ -405,7 +412,7 @@ describe('img endpoints', () => {
 
 	it('ignores a ?width outside the allowed sizes and serves the original', async () => {
 		const full = new Uint8Array(await (await SELF.fetch(`${ORIGIN}/RecCenter.jpg`)).arrayBuffer())
-		// 300 isn't one of 128/256/512/1024, so it's rejected and the source served.
+		// 300 isn't one of 64/128/256/512/1024, so it's rejected and the source served.
 		const res = await SELF.fetch(`${ORIGIN}/RecCenter.jpg?width=300`)
 		expect(res.status).toBe(200)
 		expect(new Uint8Array(await res.arrayBuffer())).toEqual(full)