diff --git a/Makefile b/Makefile
index 9785bea..fe80d64 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ SOURCES = sources
 
 CONFIG_SUB_REV = 3d5db9ebe860
 BINUTILS_VER = 2.27
-GCC_VER = 6.3.0
+GCC_VER = 6.4.0
 MUSL_VER = 1.1.19
 GMP_VER = 6.1.1
 MPC_VER = 1.0.3