diff --git a/ts/lib/runtime-require.ts b/ts/lib/runtime-require.ts
index e0832cf0b..af6acdb4d 100644
--- a/ts/lib/runtime-require.ts
+++ b/ts/lib/runtime-require.ts
@@ -26,7 +26,8 @@ type AnkiPackages =
     | "anki/theme"
     | "anki/location"
     | "anki/surround"
-    | "anki/ui";
+    | "anki/ui"
+    | "anki/reviewer";
 type PackageDeprecation<T extends Record<string, unknown>> = {
     [key in keyof T]?: string;
 };
diff --git a/ts/reviewer/index.ts b/ts/reviewer/index.ts
index 9ec947d81..7825f8472 100644
--- a/ts/reviewer/index.ts
+++ b/ts/reviewer/index.ts
@@ -17,6 +17,7 @@ globalThis.anki.mutateNextCardStates = mutateNextCardStates;
 globalThis.anki.setupImageCloze = setupImageCloze;
 
 import { bridgeCommand } from "@tslib/bridgecommand";
+import { registerPackage } from "@tslib/runtime-require";
 
 import { allImagesLoaded, preloadAnswerImages } from "./images";
 import { preloadResources } from "./preload";
@@ -261,3 +262,13 @@ document.addEventListener("focusout", (event) => {
         document.body.removeChild(dummyButton);
     }
 });
+
+registerPackage("anki/reviewer", {
+    // If you append a function to this each time the question or answer
+    // is shown, it will be called before MathJax has been rendered.
+    onUpdateHook,
+    // If you append a function to this each time the question or answer
+    // is shown, it will be called after images have been preloaded and
+    // MathJax has been rendered.
+    onShownHook,
+});