diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d4255a..f46152a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,8 @@
 
 - PLDM FD responder accepts a PLDM control handle and will register its version.
 
+- base: Define the minimum request bytes for SetTID command.
+
 ### Changed
 
 - dsp: firmware_update: Expand "params" in symbol names
diff --git a/include/libpldm/base.h b/include/libpldm/base.h
index 5c44b99..0fc73f4 100644
--- a/include/libpldm/base.h
+++ b/include/libpldm/base.h
@@ -112,6 +112,7 @@
 #define PLDM_GET_TYPES_RESP_BYTES    9
 #define PLDM_GET_TID_REQ_BYTES	     0
 #define PLDM_GET_TID_RESP_BYTES	     2
+#define PLDM_SET_TID_REQ_BYTES	     1
 #define PLDM_SET_TID_RESP_BYTES	     1
 #define PLDM_GET_COMMANDS_RESP_BYTES 33
 /* Response data has only one version and does not contain the checksum */