diff --git a/include/smbioshandler.hpp b/include/smbioshandler.hpp
index 40e081f..4e403ca 100644
--- a/include/smbioshandler.hpp
+++ b/include/smbioshandler.hpp
@@ -60,6 +60,12 @@
     MDRState State;
 } __attribute__((packed));
 
+struct RegionCompleteRequest
+{
+    uint8_t sessionId;
+    uint8_t regionId;
+} __attribute__((packed));
+
 struct RegionReadRequest
 {
     uint8_t regionId;
@@ -74,4 +80,21 @@
     uint8_t data[msgPayloadSize];
 } __attribute__((packed));
 
+struct RegionWriteRequest
+{
+    uint8_t sessionId;
+    uint8_t regionId;
+    uint8_t length;
+    uint16_t offset;
+    uint8_t data[msgPayloadSize];
+} __attribute__((packed));
+
+struct RegionLockRequest
+{
+    uint8_t sessionId;
+    uint8_t regionId;
+    uint8_t lockPolicy;
+    uint16_t msTimeout;
+} __attribute__((packed));
+
 constexpr size_t maxMDRId = 5;