diff --git a/src/lae_strings.c b/src/lae_strings.c
index 87bfc52..ea06c5b 100644
--- a/src/lae_strings.c
+++ b/src/lae_strings.c
@@ -1,4 +1,5 @@
 #include "lae_strings.h"
+#include "lae_allocator.h"
 #include <stdint.h>
 #include <stdlib.h>
 
@@ -6,4 +7,6 @@ struct ByteStr {
     uint8_t* buf;
     size_t   len;
     size_t   cap;
+
+    Allocator allocator;
 };
diff --git a/xmake.lua b/xmake.lua
index e1b4a6b..178250a 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -32,7 +32,7 @@ option_end()
 -- =========================================================
 
 add_requires("cmocka", { optional = true })
-add_requires("lae_allocator")
+add_requires("lae_allocator 1.0.0")
 
 -- =========================================================
 -- Library