diff --git a/backend/cpp/bonsai/Makefile b/backend/cpp/bonsai/Makefile
index 522791d421f8..8b8ed2d0c0c9 100644
--- a/backend/cpp/bonsai/Makefile
+++ b/backend/cpp/bonsai/Makefile
@@ -1,7 +1,7 @@
 
 # Pinned to the HEAD of the `prism` branch on https://github.com/PrismML-Eng/llama.cpp.
 # Auto-bumped nightly by .github/workflows/bump_deps.yaml.
-BONSAI_VERSION?=312bb2a93ea2bf798333fa859614fbf913ecb9e2
+BONSAI_VERSION?=f40a7bf69ba1ac1c07608fd675606fa0e090efc3
 LLAMA_REPO?=https://github.com/PrismML-Eng/llama.cpp
 
 CMAKE_ARGS?=