diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index be7a21e5..f474631a 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -53,6 +53,7 @@ dependencies = [
     "elasticsearch[requests] (>=7.10,<8.0)",
     "ldap3>=2.9.1",
     "sqlglot>=28.6.0",
+    "numpy==2.3.5"
 ]
 
 [project.optional-dependencies]