diff --git a/odoo/tools/safe_eval.py b/odoo/tools/safe_eval.py
index 59f3617d359..02c0b31423b 100644
--- a/odoo/tools/safe_eval.py
+++ b/odoo/tools/safe_eval.py
@@ -86,6 +86,8 @@ _EXPR_OPCODES = _CONST_OPCODES.union(to_opcodes([
     # specialised comparisons
     'IS_OP', 'CONTAINS_OP',
     'DICT_MERGE', 'DICT_UPDATE',
+    # Basically used in any "generator literal"
+    'GEN_START',  # added in 3.10 but already removed from 3.11.
 ])) - _BLACKLIST
 
 _SAFE_OPCODES = _EXPR_OPCODES.union(to_opcodes([