1 files changed, 9 insertions, 2 deletions
diff --git a/src/content/dependencies/generateStickyHeadingContainer.js b/src/content/dependencies/generateStickyHeadingContainer.js
index 8eb39e6c..9becfb26 100644
--- a/src/content/dependencies/generateStickyHeadingContainer.js
+++ b/src/content/dependencies/generateStickyHeadingContainer.js
@@ -2,8 +2,15 @@ export default {
   extraDependencies: ['html'],
 
   slots: {
-    title: {type: 'html'},
-    cover: {type: 'html'},
+    title: {
+      type: 'html',
+      mutable: false,
+    },
+
+    cover: {
+      type: 'html',
+      mutable: true,
+    },
   },
 
   generate: (slots, {html}) =>