diff --git a/include/atomic/gcc_builtins.h b/include/atomic/gcc_builtins.h
index 99e6f62..b8ca67a 100644
--- a/include/atomic/gcc_builtins.h
+++ b/include/atomic/gcc_builtins.h
@@ -65,14 +65,14 @@
 #define my_atomic_fas64(P, D) __atomic_exchange_n((P), (D), __ATOMIC_SEQ_CST)
 #define my_atomic_fasptr(P, D) __atomic_exchange_n((P), (D), __ATOMIC_SEQ_CST)

-#define my_atomic_add32(P, A) __atomic_fetch_add((P), (A), __ATOMIC_SEQ_CST)
-#define my_atomic_add64(P, A) __atomic_fetch_add((P), (A), __ATOMIC_SEQ_CST)
+#define my_atomic_add32(P, A) __atomic_fetch_add((P), (A), __ATOMIC_ACQ_REL)
+#define my_atomic_add64(P, A) __atomic_fetch_add((P), (A), __ATOMIC_ACQ_REL)

 #define my_atomic_cas32(P, E, D) \
-  __atomic_compare_exchange_n((P), (E), (D), 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
+         __atomic_compare_exchange_n((P), (E), (D), 0, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)
 #define my_atomic_cas64(P, E, D) \
-  __atomic_compare_exchange_n((P), (E), (D), 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
+         __atomic_compare_exchange_n((P), (E), (D), 0, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)
 #define my_atomic_casptr(P, E, D) \
-  __atomic_compare_exchange_n((P), (E), (D), 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
+         __atomic_compare_exchange_n((P), (E), (D), 0, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)

 #endif /* ATOMIC_GCC_BUILTINS_INCLUDED */