diff --git a/riscv/fdt.c b/riscv/fdt.c
index c62d4a3..5587343 100644
--- a/riscv/fdt.c
+++ b/riscv/fdt.c
@@ -34,6 +34,7 @@
 	{"zbs", KVM_RISCV_ISA_EXT_ZBS},
 	{"zca", KVM_RISCV_ISA_EXT_ZCA},
 	{"zcb", KVM_RISCV_ISA_EXT_ZCB},
+	{"zcd", KVM_RISCV_ISA_EXT_ZCD},
 	{"zfa", KVM_RISCV_ISA_EXT_ZFA},
 	{"zfh", KVM_RISCV_ISA_EXT_ZFH},
 	{"zfhmin", KVM_RISCV_ISA_EXT_ZFHMIN},
diff --git a/riscv/include/kvm/kvm-config-arch.h b/riscv/include/kvm/kvm-config-arch.h
index 68fc47c..155faa6 100644
--- a/riscv/include/kvm/kvm-config-arch.h
+++ b/riscv/include/kvm/kvm-config-arch.h
@@ -79,6 +79,9 @@
 	OPT_BOOLEAN('\0', "disable-zcb",				\
 		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZCB],	\
 		    "Disable Zcb Extension"),				\
+	OPT_BOOLEAN('\0', "disable-zcd",				\
+		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZCD],	\
+		    "Disable Zcd Extension"),				\
 	OPT_BOOLEAN('\0', "disable-zfa",				\
 		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZFA],	\
 		    "Disable Zfa Extension"),				\