diff --git a/.changeset/young-taxis-battle.md b/.changeset/young-taxis-battle.md
new file mode 100644
index 000000000..66d0ad1d4
--- /dev/null
+++ b/.changeset/young-taxis-battle.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Fix an issue where HTML attributes do not render if getHTMLAttributes in an image service returns a Promise
\ No newline at end of file
diff --git a/packages/astro/src/assets/internal.ts b/packages/astro/src/assets/internal.ts
index 9cb48f588..310b746a8 100644
--- a/packages/astro/src/assets/internal.ts
+++ b/packages/astro/src/assets/internal.ts
@@ -111,7 +111,7 @@ export async function getImage(
 		src: imageURL,
 		attributes:
 			service.getHTMLAttributes !== undefined
-				? service.getHTMLAttributes(validatedOptions, imageConfig)
+				? await service.getHTMLAttributes(validatedOptions, imageConfig)
 				: {},
 	};
 }