diff --git a/config/_default/params.yaml b/config/_default/params.yaml
index 65af16d..94488c3 100644
--- a/config/_default/params.yaml
+++ b/config/_default/params.yaml
@@ -103,3 +103,9 @@ extensions:
     local_backend: false
   academicons:
     enable: true
+
+# Security
+
+security:
+  # Allow frame for embedding speaker notes in slides
+  allow_frame: true