diff --git a/requirements.txt b/requirements.txt
index 869c3883..145d4032 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -65,7 +65,7 @@ networkx>=3.7
 python-louvain==0.16
 
 # ── Authority resolver cache (Phase 1 — disambiguation/authority optimization)
-cachetools>=7.2.0
+cachetools>=7.2.1
 
 # ── Distributed cache (Redis-backed, optional; in-process fallback when REDIS_URL unset)
 redis>=8.1.0