diff --git a/mime-parse/src/constants.rs b/mime-parse/src/constants.rs
index 4a9f691c..cc4150b9 100644
--- a/mime-parse/src/constants.rs
+++ b/mime-parse/src/constants.rs
@@ -269,6 +269,12 @@ impl Atoms {
                             if sub == JPEG {
                                 return Atoms::IMAGE_JPEG;
                             }
+                            if sub == WEBP {
+                                return Atoms::IMAGE_WEBP;
+                            }
+                            if sub == AVIF {
+                                return Atoms::IMAGE_AVIF;
+                            }
                         },
                         7 => {
                             if sub == SVG {
@@ -444,6 +450,8 @@ names! {
     BMP, "bmp";
     GIF, "gif";
     JPEG, "jpeg";
+    WEBP, "webp";
+    AVIF, "avif";
     PNG, "png";
     SVG, "svg+xml";
 
@@ -479,6 +487,8 @@ mimes! {
     IMAGE_GIF, "image/gif", 5;
     IMAGE_PNG, "image/png", 5;
     IMAGE_BMP, "image/bmp", 5;
+    IMAGE_WEBP, "image/webp", 5;
+    IMAGE_AVIF, "image/avif", 5;
     IMAGE_SVG, "image/svg+xml", 5, Some(9);
 
     FONT_WOFF, "font/woff", 4;
diff --git a/src/constants.rs b/src/constants.rs
index 45a3c4e9..ca6c50d6 100644
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -96,6 +96,8 @@ mimes! {
     IMAGE_GIF, "image/gif";
     IMAGE_PNG, "image/png";
     IMAGE_BMP, "image/bmp";
+    IMAGE_WEBP, "image/webp";
+    IMAGE_AVIF, "image/avif";
     IMAGE_SVG, "image/svg+xml";
 
     FONT_WOFF, "font/woff";