diff --git a/composer.json b/composer.json
index f36a173..dc575ab 100644
--- a/composer.json
+++ b/composer.json
@@ -228,6 +228,9 @@
             "drupal/ds": {
                 "Parent theme template inheritance bug": "https://www.drupal.org/files/issues/2021-02-22/2895316-12.patch"
             },
+            "drupal/markdown": {
+                "Explain Unknown parsers more clearly - also fixes status check 403 [#3529633]": "https://git.drupalcode.org/project/markdown/-/merge_requests/51.diff"
+            },
             "drupal/stripe": {
                 "Don't load Stripe JS on every page": "https://www.drupal.org/files/issues/2021-08-12/dont-load-strip-js-on-every-page-3225280.diff"
             }