diff --git a/backend/requirements/default.txt b/backend/requirements/default.txt
index 016d14c2325..c54b9dcc998 100644
--- a/backend/requirements/default.txt
+++ b/backend/requirements/default.txt
@@ -90,7 +90,7 @@ boto3-stubs[s3]==1.34.133
 shapely==2.0.6
 stripe==10.12.0
 urllib3==2.2.3
-mistune==0.8.4
+mistune==3.3.0
 sentry-sdk==2.14.0
 prometheus_client==0.21.0
 fastapi-limiter==0.1.6
\ No newline at end of file