diff --git a/asm/instrs.go b/asm/instrs.go
index b963ddf..5ea32c6 100644
--- a/asm/instrs.go
+++ b/asm/instrs.go
@@ -809,6 +809,8 @@ var sseBinTable = map[string]sseBin{
 	"MAXSS": {0xF3, 0x5F}, "MAXSD": {0xF2, 0x5F},
 	"UNPCKLPS": {0, 0x14}, "UNPCKHPS": {0, 0x15},
 	"UNPCKLPD": {0x66, 0x14}, "UNPCKHPD": {0x66, 0x15},
+	"CVTSS2SD": {0xF3, 0x5A}, "CVTSD2SS": {0xF2, 0x5A},
+	"CVTPS2PD": {0, 0x5A}, "CVTPD2PS": {0x66, 0x5A},
 }
 
 // sseShuf describes a legacy SSE shuffle taking a trailing imm8