diff --git a/backend/cpp/turboquant/Makefile b/backend/cpp/turboquant/Makefile
index bf2a445f2b74..6e7c98cf9dbe 100644
--- a/backend/cpp/turboquant/Makefile
+++ b/backend/cpp/turboquant/Makefile
@@ -1,7 +1,7 @@
 
 # Pinned to the HEAD of feature/turboquant-kv-cache on https://github.com/TheTom/llama-cpp-turboquant.
 # Auto-bumped nightly by .github/workflows/bump_deps.yaml.
-TURBOQUANT_VERSION?=ca28b4bc0e531635d83fe530c6e6e8d694c4330d
+TURBOQUANT_VERSION?=643956891dfdf51aecdbd05ca508dd21e21e8195
 LLAMA_REPO?=https://github.com/TheTom/llama-cpp-turboquant
 
 CMAKE_ARGS?=