diff --git a/src/mainboard/google/rex/variants/karis/memory/Makefile.inc b/src/mainboard/google/rex/variants/karis/memory/Makefile.inc
index a37b32f..210dbe5 100644
--- a/src/mainboard/google/rex/variants/karis/memory/Makefile.inc
+++ b/src/mainboard/google/rex/variants/karis/memory/Makefile.inc
@@ -1,9 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # This is an auto-generated file. Do not edit!!
 # Generated by:
-# util/spd_tools/bin/part_id_gen MTL lp5 src/mainboard/google/rex/variants/karis/memory/ src/mainboard/google/rex/variants/karis/memory/mem_parts_used.txt
+# util/spd_tools/bin/part_id_gen MTL lp5 src/mainboard/google/rex/variants/karis/memory src/mainboard/google/rex/variants/karis/memory/mem_parts_used.txt
 
 SPD_SOURCES =
 SPD_SOURCES += spd/lp5/set-0/spd-11.hex      # ID = 0(0b0000)  Parts = MT62F1G32D2DS-023 WT:B, H58G56BK8BX068
-SPD_SOURCES += spd/lp5/set-0/spd-1.hex      # ID = 1(0b0001)  Parts = H9JCNNNBK3MLYR-N6E
+SPD_SOURCES += spd/lp5/set-0/spd-1.hex      # ID = 1(0b0001)  Parts = H9JCNNNBK3MLYR-N6E, MT62F512M32D2DR-031 WT:B
 SPD_SOURCES += spd/lp5/set-0/spd-7.hex      # ID = 2(0b0010)  Parts = K3KL8L80CM-MGCT
diff --git a/src/mainboard/google/rex/variants/karis/memory/dram_id.generated.txt b/src/mainboard/google/rex/variants/karis/memory/dram_id.generated.txt
index a34678e..95ab792 100644
--- a/src/mainboard/google/rex/variants/karis/memory/dram_id.generated.txt
+++ b/src/mainboard/google/rex/variants/karis/memory/dram_id.generated.txt
@@ -1,10 +1,11 @@
 # SPDX-License-Identifier: GPL-2.0-or-later
 # This is an auto-generated file. Do not edit!!
 # Generated by:
-# util/spd_tools/bin/part_id_gen MTL lp5 src/mainboard/google/rex/variants/karis/memory/ src/mainboard/google/rex/variants/karis/memory/mem_parts_used.txt
+# util/spd_tools/bin/part_id_gen MTL lp5 src/mainboard/google/rex/variants/karis/memory src/mainboard/google/rex/variants/karis/memory/mem_parts_used.txt
 
 DRAM Part Name                 ID to assign
 MT62F1G32D2DS-023 WT:B         0 (0000)
 H9JCNNNBK3MLYR-N6E             1 (0001)
 H58G56BK8BX068                 0 (0000)
 K3KL8L80CM-MGCT                2 (0010)
+MT62F512M32D2DR-031 WT:B       1 (0001)
diff --git a/src/mainboard/google/rex/variants/karis/memory/mem_parts_used.txt b/src/mainboard/google/rex/variants/karis/memory/mem_parts_used.txt
index e92b0a3..6b0eee4 100644
--- a/src/mainboard/google/rex/variants/karis/memory/mem_parts_used.txt
+++ b/src/mainboard/google/rex/variants/karis/memory/mem_parts_used.txt
@@ -13,3 +13,4 @@
 H9JCNNNBK3MLYR-N6E
 H58G56BK8BX068
 K3KL8L80CM-MGCT
+MT62F512M32D2DR-031 WT:B