--- a/src/Makefile	Sat Dec 13 16:30:41 2025 +0100
+++ b/src/Makefile	Sat Dec 13 16:31:55 2025 +0100
@@ -104,7 +104,8 @@
 
 $(build_dir)/json$(OBJ_EXT): json.c cx/json.h cx/common.h cx/allocator.h \
  cx/string.h cx/buffer.h cx/array_list.h cx/list.h cx/collection.h \
- cx/iterator.h cx/compare.h cx/map.h cx/hash_key.h cx/kv_list.h
+ cx/iterator.h cx/compare.h cx/map.h cx/hash_key.h cx/kv_list.h \
+ cx/hash_map.h
 	@echo "Compiling $<"
 	$(CC) -o $@ $(CFLAGS)  -c $<