diff --git a/backend/cpp/bonsai/Makefile b/backend/cpp/bonsai/Makefile
index ee6f4fe07..da670703c 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?=842b1880415d6f508f03b789e5ce70194def7bfd
+BONSAI_VERSION?=adfffbe41b2cabcd51fff326ab045662265062bb
 LLAMA_REPO?=https://github.com/PrismML-Eng/llama.cpp
 
 CMAKE_ARGS?=