diff --git a/drivers/renesas/rcar/ddr/ddr_b/boot_init_dram_regdef.h b/drivers/renesas/rcar/ddr/ddr_b/boot_init_dram_regdef.h
index dc153a6..56363eb 100644
--- a/drivers/renesas/rcar/ddr/ddr_b/boot_init_dram_regdef.h
+++ b/drivers/renesas/rcar/ddr/ddr_b/boot_init_dram_regdef.h
@@ -5,7 +5,7 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#define RCAR_DDR_VERSION	"rev.0.39"
+#define RCAR_DDR_VERSION	"rev.0.40"
 #define DRAM_CH_CNT		0x04
 #define SLICE_CNT		0x04
 #define CS_CNT			0x02