diff --git a/requirements.txt b/requirements.txt
index f248505..43a8be5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ beautifulsoup4==4.14.3
 # ── Semantic similarity signal (Step 3) ──────────────────────────────────────
 # Lazy-imported inside SentenceTransformerProvider. Tests use the mock
 # provider and do NOT need this installed — keeps CI fast and hermetic.
-sentence-transformers==3.4.1
+sentence-transformers==5.4.1
 
 # ── Persistence layer (Step 4) ───────────────────────────────────────────────
 # pymongo is lazy-imported inside MongoStore; tests use InMemoryStore and