diff --git a/lib/index.d.ts b/lib/index.d.ts
index d55787491..470889a15 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -1404,7 +1404,7 @@ declare namespace sharp {
         chromaSubsampling?: '4:4:4' | '4:2:0';
     }
 
-    interface JxlOptions extends OutputOptions {
+    interface JxlOptions extends OutputOptions, AnimationOptions {
         /** Maximum encoding error, between 0 (highest quality) and 15 (lowest quality) (optional, default 1.0) */
         distance?: number;
         /** Calculate distance based on JPEG-like quality, between 1 and 100, overrides distance if specified */
@@ -1413,7 +1413,7 @@ declare namespace sharp {
         decodingTier?: number;
         /** Use lossless compression (optional, default false) */
         lossless?: boolean;
-        /** CPU effort, between 3 (fastest) and 9 (slowest) (optional, default 7) */
+        /** CPU effort, between 1 (fastest) and 9 (slowest) (optional, default 7) */
         effort?: number | undefined;
     }
 
diff --git a/test/types/sharp.test-d.mts b/test/types/sharp.test-d.mts
index 049d1537c..35c04b0fb 100644
--- a/test/types/sharp.test-d.mts
+++ b/test/types/sharp.test-d.mts
@@ -547,6 +547,8 @@ sharp('input.tiff').jxl({ quality: 50 }).toFile('out.jxl');
 sharp('input.tiff').jxl({ decodingTier: 4 }).toFile('out.jxl');
 sharp('input.tiff').jxl({ lossless: true }).toFile('out.jxl');
 sharp('input.tiff').jxl({ effort: 7 }).toFile('out.jxl');
+sharp('input.tiff').jxl({ loop: 3 }).toFile('out.jxl');
+sharp('input.tiff').jxl({ delay: [100, 200] }).toFile('out.jxl');
 
 // Support webp options
 sharp('input.tiff').webp({ minSize: true, mixed: true, exact: true }).toFile('out.webp');