diff --git a/backend/cpp/ds4/Makefile b/backend/cpp/ds4/Makefile
index bdf126122..5e73c1328 100644
--- a/backend/cpp/ds4/Makefile
+++ b/backend/cpp/ds4/Makefile
@@ -1,10 +1,10 @@
 # ds4 backend Makefile.
 #
-# Upstream pin lives below as DS4_VERSION?=84cc882352757baf628a1776badf7cc54d584e28
+# Upstream pin lives below as DS4_VERSION?=c1d4597a80e300b803dc642519718f2c999589da
 # (.github/bump_deps.sh) can find and update it - matches the
 # llama-cpp / ik-llama-cpp / turboquant convention.
 
-DS4_VERSION?=84cc882352757baf628a1776badf7cc54d584e28
+DS4_VERSION?=c1d4597a80e300b803dc642519718f2c999589da
 DS4_REPO?=https://github.com/antirez/ds4
 
 CURRENT_MAKEFILE_DIR := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))