diff --git a/scancodes.hpp b/scancodes.hpp
index db79231..7fd5b12 100644
--- a/scancodes.hpp
+++ b/scancodes.hpp
@@ -80,3 +80,20 @@
 #define USBHID_KEY_DOWN 0x51
 #define USBHID_KEY_UP 0x52
 #define USBHID_KEY_NUMLOCK 0x53
+#define USBHID_KEY_KP_DIVIDE 0x54
+#define USBHID_KEY_KP_MULTIPLY 0x55
+#define USBHID_KEY_KP_SUBTRACT 0x56
+#define USBHID_KEY_KP_ADD 0x57
+#define USBHID_KEY_KP_ENTER 0x58
+#define USBHID_KEY_KP_1 0x59
+#define USBHID_KEY_KP_2 0x5a
+#define USBHID_KEY_KP_3 0x5b
+#define USBHID_KEY_KP_4 0x5c
+#define USBHID_KEY_KP_5 0x5d
+#define USBHID_KEY_KP_6 0x5e
+#define USBHID_KEY_KP_7 0x5f
+#define USBHID_KEY_KP_8 0x60
+#define USBHID_KEY_KP_9 0x61
+#define USBHID_KEY_KP_0 0x62
+#define USBHID_KEY_KP_DECIMAL 0x63
+#define USBHID_KEY_KP_EQUAL 0x67