diff --git a/backend/requirements/base.txt b/backend/requirements/base.txt
index 7a796dd0..a551e0a2 100644
--- a/backend/requirements/base.txt
+++ b/backend/requirements/base.txt
@@ -30,5 +30,5 @@ websockets==11.0.3
 sqlalchemy==2.0.19
 psycopg2-binary
 pytz==2023.3
-mip==1.15.0
+mip==1.13.0