diff --git a/src/lib/markdown.ts b/src/lib/markdown.ts
index 430af0b56..32d1d8d8d 100644
--- a/src/lib/markdown.ts
+++ b/src/lib/markdown.ts
@@ -30,6 +30,7 @@ export const sanitizeConfig: Config = {
     "href",
     "id",
     "name",
+    "open",
     "rel",
     "src",
     "target",
@@ -46,6 +47,7 @@ export const sanitizeConfig: Config = {
     "code",
     "dd",
     "del",
+    "details",
     "div",
     "dl",
     "dt",
@@ -67,6 +69,7 @@ export const sanitizeConfig: Config = {
     "radicle-external-link",
     "s",
     "strong",
+    "summary",
     "table",
     "tbody",
     "td",