diff --git a/MdePkg/Include/IndustryStandard/Acpi61.h b/MdePkg/Include/IndustryStandard/Acpi61.h
index 94d7241013..5100d8b3b4 100644
--- a/MdePkg/Include/IndustryStandard/Acpi61.h
+++ b/MdePkg/Include/IndustryStandard/Acpi61.h
@@ -1980,6 +1980,7 @@ typedef struct {
 #define EFI_ACPI_6_1_EINJ_CHECK_BUSY_STATUS               0x06
 #define EFI_ACPI_6_1_EINJ_GET_COMMAND_STATUS              0x07
 #define EFI_ACPI_6_1_EINJ_SET_ERROR_TYPE_WITH_ADDRESS     0x08
+#define EFI_ACPI_6_1_EINJ_GET_EXECUTE_OPERATION_TIMINGS   0x09
 #define EFI_ACPI_6_1_EINJ_TRIGGER_ERROR                   0xFF
 
 ///
diff --git a/MdePkg/Include/IndustryStandard/Acpi62.h b/MdePkg/Include/IndustryStandard/Acpi62.h
index 732e4d16c5..711b88b758 100644
--- a/MdePkg/Include/IndustryStandard/Acpi62.h
+++ b/MdePkg/Include/IndustryStandard/Acpi62.h
@@ -2293,6 +2293,7 @@ typedef struct {
 #define EFI_ACPI_6_2_EINJ_CHECK_BUSY_STATUS               0x06
 #define EFI_ACPI_6_2_EINJ_GET_COMMAND_STATUS              0x07
 #define EFI_ACPI_6_2_EINJ_SET_ERROR_TYPE_WITH_ADDRESS     0x08
+#define EFI_ACPI_6_2_EINJ_GET_EXECUTE_OPERATION_TIMINGS   0x09
 #define EFI_ACPI_6_2_EINJ_TRIGGER_ERROR                   0xFF
 
 ///
diff --git a/MdePkg/Include/IndustryStandard/Acpi63.h b/MdePkg/Include/IndustryStandard/Acpi63.h
index 0cf984a840..68798da725 100644
--- a/MdePkg/Include/IndustryStandard/Acpi63.h
+++ b/MdePkg/Include/IndustryStandard/Acpi63.h
@@ -2253,6 +2253,7 @@ typedef struct {
 #define EFI_ACPI_6_3_EINJ_CHECK_BUSY_STATUS               0x06
 #define EFI_ACPI_6_3_EINJ_GET_COMMAND_STATUS              0x07
 #define EFI_ACPI_6_3_EINJ_SET_ERROR_TYPE_WITH_ADDRESS     0x08
+#define EFI_ACPI_6_3_EINJ_GET_EXECUTE_OPERATION_TIMINGS   0x09
 #define EFI_ACPI_6_3_EINJ_TRIGGER_ERROR                   0xFF
 
 ///
diff --git a/MdePkg/Include/IndustryStandard/Acpi64.h b/MdePkg/Include/IndustryStandard/Acpi64.h
index fd7b718ce4..bbe6a3c9eb 100644
--- a/MdePkg/Include/IndustryStandard/Acpi64.h
+++ b/MdePkg/Include/IndustryStandard/Acpi64.h
@@ -2336,6 +2336,7 @@ typedef struct {
 #define EFI_ACPI_6_4_EINJ_CHECK_BUSY_STATUS               0x06
 #define EFI_ACPI_6_4_EINJ_GET_COMMAND_STATUS              0x07
 #define EFI_ACPI_6_4_EINJ_SET_ERROR_TYPE_WITH_ADDRESS     0x08
+#define EFI_ACPI_6_4_EINJ_GET_EXECUTE_OPERATION_TIMINGS   0x09
 #define EFI_ACPI_6_4_EINJ_TRIGGER_ERROR                   0xFF
 
 ///
diff --git a/MdePkg/Include/IndustryStandard/Acpi65.h b/MdePkg/Include/IndustryStandard/Acpi65.h
index 6721c42e47..264869e862 100644
--- a/MdePkg/Include/IndustryStandard/Acpi65.h
+++ b/MdePkg/Include/IndustryStandard/Acpi65.h
@@ -2433,6 +2433,7 @@ typedef struct {
 #define EFI_ACPI_6_5_EINJ_CHECK_BUSY_STATUS               0x06
 #define EFI_ACPI_6_5_EINJ_GET_COMMAND_STATUS              0x07
 #define EFI_ACPI_6_5_EINJ_SET_ERROR_TYPE_WITH_ADDRESS     0x08
+#define EFI_ACPI_6_4_EINJ_GET_EXECUTE_OPERATION_TIMINGS   0x09
 #define EFI_ACPI_6_5_EINJ_TRIGGER_ERROR                   0xFF
 
 ///