diff --git a/llama_cpp/llama_cpp.py b/llama_cpp/llama_cpp.py
index 8cb442d..5708e7b 100644
--- a/llama_cpp/llama_cpp.py
+++ b/llama_cpp/llama_cpp.py
@@ -1086,7 +1086,7 @@ class llama_beams_state(ctypes.Structure):
 # // Type of pointer to the beam_search_callback function.
 # // void* callback_data is any custom data passed to llama_beam_search, that is subsequently
 # // passed back to beam_search_callback. This avoids having to use global variables in the callback.
-# typedef void (*llama_beam_search_callback_fn_t)(void * callback_data, llama_beams_state);
+# typedef void (*llama_beam_search_callback_fn_t)(void * callback_data, struct llama_beams_state);
 llama_beam_search_callback_fn_t = ctypes.CFUNCTYPE(None, c_void_p, llama_beams_state)
 
 
diff --git a/vendor/llama.cpp b/vendor/llama.cpp
index c10704d..3af6b86 160000
--- a/vendor/llama.cpp
+++ b/vendor/llama.cpp
@@ -1 +1 @@
-Subproject commit c10704d01e21e3dbe4d6ca1026ebff85349dd239
+Subproject commit 3af6b86301ddfb11bb68e91dfc030b611b0d8426