diff --git a/lib/index.d.ts b/lib/index.d.ts
index 198e443e..41236345 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -1784,6 +1784,7 @@ declare namespace sharp {
     interface KernelEnum {
         nearest: 'nearest';
         cubic: 'cubic';
+        linear: 'linear';
         mitchell: 'mitchell';
         lanczos2: 'lanczos2';
         lanczos3: 'lanczos3';