--- a/src/Makefile	Sun Dec 22 22:53:53 2024 +0100
+++ b/src/Makefile	Sun Dec 22 23:10:07 2024 +0100
@@ -85,7 +85,8 @@
 	@echo "Compiling $<"
 	$(CC) -o $@ $(CFLAGS)  -c $<
 
-$(build_dir)/hash_key$(OBJ_EXT): hash_key.c cx/hash_key.h cx/common.h
+$(build_dir)/hash_key$(OBJ_EXT): hash_key.c cx/hash_key.h cx/common.h \
+ cx/string.h cx/allocator.h
 	@echo "Compiling $<"
 	$(CC) -o $@ $(CFLAGS)  -c $<