diff --git a/Userland/Libraries/LibWeb/HTML/AttributeNames.h b/Userland/Libraries/LibWeb/HTML/AttributeNames.h
index d26ff731b2c98d78cd8c8be02d153aa31eafc44f..d8d3900016c912965776a25b60338b0ad94d18d7 100644
--- a/Userland/Libraries/LibWeb/HTML/AttributeNames.h
+++ b/Userland/Libraries/LibWeb/HTML/AttributeNames.h
@@ -67,6 +67,7 @@ namespace AttributeNames {
     __ENUMERATE_HTML_ATTRIBUTE(enctype)                    \
     __ENUMERATE_HTML_ATTRIBUTE(event)                      \
     __ENUMERATE_HTML_ATTRIBUTE(face)                       \
+    __ENUMERATE_HTML_ATTRIBUTE(fetchpriority)              \
     __ENUMERATE_HTML_ATTRIBUTE(for_)                       \
     __ENUMERATE_HTML_ATTRIBUTE(form)                       \
     __ENUMERATE_HTML_ATTRIBUTE(formaction)                 \
diff --git a/Userland/Libraries/LibWeb/HTML/Scripting/Fetching.idl b/Userland/Libraries/LibWeb/HTML/Scripting/Fetching.idl
index 960b92c161c839c856457bd87b4255951818f15c..491969bd5867e180bab351ce6ec02e8493de2dee 100644
--- a/Userland/Libraries/LibWeb/HTML/Scripting/Fetching.idl
+++ b/Userland/Libraries/LibWeb/HTML/Scripting/Fetching.idl
@@ -11,3 +11,11 @@ enum LazyLoadingAttribute {
     "lazy",
     "eager"
 };
+
+// https://html.spec.whatwg.org/multipage/urls-and-fetching.html#fetch-priority-attributes
+[MissingValueDefault=auto, InvalidValueDefault=auto]
+enum FetchPriorityAttribute {
+    "high",
+    "low",
+    "auto"
+};