diff --git a/drivers/g-wolves/g-wolves.h b/drivers/g-wolves/g-wolves.h
index 9f3d9ca..4ea2f27 100644
--- a/drivers/g-wolves/g-wolves.h
+++ b/drivers/g-wolves/g-wolves.h
@@ -26,6 +26,7 @@
 #define REPORT_UNKNOWN_6_SIZE 0x5
 #define REPORT_BATTERY_SIZE 0x2
 #define REPORT_WIRELESS_MOUSE_SIZE 0x1
+#define REPORT_WIRELESS_FIRMWARE_VERSION_SIZE 0x4 // -> 0x7
 
 #define COMMAND_UNKNOWN_0 0x82
 #define COMMAND_DPI_SETTINGS 0x83
@@ -38,6 +39,7 @@
 #define COMMAND_UNKNOWN_6 0x98
 #define COMMAND_BATTERY 0x8F
 #define COMMAND_WIRELESS_MOUSE 0x90 // -> send the next report to mouse, checking if mouse is connected
+#define COMMAND_WIRELESS_FIRMWARE_VERSION 0x81
 
 typedef struct DPI_LEVEL
 {
@@ -176,3 +178,17 @@ struct REPORT_WIRELESS
     uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 1];
 } __attribute__((packed));
 static_assert(sizeof(struct REPORT_WIRELESS) == REPORT_MAX_SIZE, "Report WIRELESS not of right size");
+
+struct REPORT_WIRELESS_FIRMWARE_VERSION
+{
+    report_header_t header;
+
+    uint8_t version_major;
+    uint8_t version_med;
+    uint8_t version_minor;
+
+    uint8_t values[4];
+
+    uint8_t zeros[REPORT_MAX_SIZE - sizeof(report_header_t) - 7];
+} __attribute__((packed));
+static_assert(sizeof(struct REPORT_WIRELESS_FIRMWARE_VERSION) == REPORT_MAX_SIZE, "Report WIRELESS_FIRMWARE_VERSION not of right size");