diff --git a/.changeset/list-ruben-hunk-viewed.md b/.changeset/list-ruben-hunk-viewed.md
new file mode 100644
index 000000000..a845151cc
--- /dev/null
+++ b/.changeset/list-ruben-hunk-viewed.md
@@ -0,0 +1,2 @@
+---
+---
diff --git a/website/src/data/extensions.ts b/website/src/data/extensions.ts
index 77331239a..70aafb8a9 100644
--- a/website/src/data/extensions.ts
+++ b/website/src/data/extensions.ts
@@ -274,6 +274,15 @@ export const EXTENSION_CATALOG: readonly ExtensionListing[] = [
     version: "0.1.0",
     apiVersion: 16,
   },
+  {
+    repo: "RubenFricke/hunk-viewed",
+    name: "hunk-viewed",
+    summary:
+      "GitHub-style viewed marks: press x to mark a hunk viewed, X for the whole file, fold what you have seen, and see progress toward what is left.",
+    categories: ["File view", "Line highlighter", "Command"],
+    version: "0.3.1",
+    apiVersion: 31,
+  },
   {
     repo: "sadick254/hunk-commit-log",
     name: "hunk-commit-log",