--- src/treesit.c	2025-07-05 17:56:00.000000000 +0800
+++ src/treesit.c	2026-03-20 17:59:51.000000000 +0800
@@ -34,7 +34,11 @@
 # include "w32common.h"
 
 /* In alphabetical order.  */
+#if TREE_SITTER_LANGUAGE_VERSION >= 15
+#undef ts_language_abi_version
+#else
 #undef ts_language_version
+#endif
 #undef ts_node_child
 #undef ts_node_child_by_field_name
 #undef ts_node_child_count
@@ -89,7 +93,11 @@
 #undef ts_tree_get_changed_ranges
 #undef ts_tree_root_node
 
+#if TREE_SITTER_LANGUAGE_VERSION >= 15
+DEF_DLL_FN (uint32_t, ts_language_abi_version, (const TSLanguage *));
+#else
 DEF_DLL_FN (uint32_t, ts_language_version, (const TSLanguage *));
+#endif
 DEF_DLL_FN (TSNode, ts_node_child, (TSNode, uint32_t));
 DEF_DLL_FN (TSNode, ts_node_child_by_field_name,
 	    (TSNode, const char *, uint32_t));
@@ -166,7 +174,11 @@
   if (!library)
     return false;
 
+#if TREE_SITTER_LANGUAGE_VERSION >= 15
+  LOAD_DLL_FN (library, ts_language_abi_version);
+#else
   LOAD_DLL_FN (library, ts_language_version);
+#endif
   LOAD_DLL_FN (library, ts_node_child);
   LOAD_DLL_FN (library, ts_node_child_by_field_name);
   LOAD_DLL_FN (library, ts_node_child_count);
@@ -224,7 +236,11 @@
   return true;
 }
 
+#if TREE_SITTER_LANGUAGE_VERSION >= 15
+#define ts_language_abi_version fn_ts_language_abi_version
+#else
 #define ts_language_version fn_ts_language_version
+#endif
 #define ts_node_child fn_ts_node_child
 #define ts_node_child_by_field_name fn_ts_node_child_by_field_name
 #define ts_node_child_count fn_ts_node_child_count
@@ -745,8 +761,13 @@
   if (!success)
     {
       *signal_symbol = Qtreesit_load_language_error;
+#if TREE_SITTER_LANGUAGE_VERSION >= 15
+      *signal_data = list2 (Qversion_mismatch,
+			    make_fixnum (ts_language_abi_version (lang)));
+#else
       *signal_data = list2 (Qversion_mismatch,
 			    make_fixnum (ts_language_version (lang)));
+#endif
       return NULL;
     }
   return lang;
@@ -817,7 +838,11 @@
 						       &signal_data);
       if (ts_language == NULL)
 	return Qnil;
+#if TREE_SITTER_LANGUAGE_VERSION >= 15
+      uint32_t version =  ts_language_abi_version (ts_language);
+#else
       uint32_t version =  ts_language_version (ts_language);
+#endif
       return make_fixnum((ptrdiff_t) version);
     }
 }