diff --git a/proposals/simd/BinarySIMD.md b/proposals/simd/BinarySIMD.md
index 865112f5e..a90e16179 100644
--- a/proposals/simd/BinarySIMD.md
+++ b/proposals/simd/BinarySIMD.md
@@ -225,15 +225,15 @@ For example, `ImmLaneIdx16` is a byte with values in the range 0-15 (inclusive).
 | `f32x4.convert_i32x4_u`     |    `0xfb`| -                  |
 | `v128.load32_zero`          |    `0xfc`| -                  |
 | `v128.load64_zero`          |    `0xfd`| -                  |
-| `i16x8.extmul_low_i8x16_s`  |   `0x110`| -                  |
-| `i16x8.extmul_high_i8x16_s` |   `0x111`| -                  |
-| `i16x8.extmul_low_i8x16_u`  |   `0x112`| -                  |
-| `i16x8.extmul_high_i8x16_u` |   `0x113`| -                  |
-| `i32x4.extmul_low_i16x8_s`  |   `0x114`| -                  |
-| `i32x4.extmul_high_i16x8_s` |   `0x115`| -                  |
-| `i32x4.extmul_low_i16x8_u`  |   `0x116`| -                  |
-| `i32x4.extmul_high_i16x8_u` |   `0x117`| -                  |
-| `i64x2.extmul_low_i32x4_s`  |   `0x118`| -                  |
-| `i64x2.extmul_high_i32x4_s` |   `0x119`| -                  |
-| `i64x2.extmul_low_i32x4_u`  |   `0x11a`| -                  |
-| `i64x2.extmul_high_i32x4_u` |   `0x11b`| -                  |
+| `i16x8.extmul_low_i8x16_s`  |    `0x9a`| -                  |
+| `i16x8.extmul_high_i8x16_s` |    `0x9d`| -                  |
+| `i16x8.extmul_low_i8x16_u`  |    `0x9e`| -                  |
+| `i16x8.extmul_high_i8x16_u` |    `0x9f`| -                  |
+| `i32x4.extmul_low_i16x8_s`  |    `0xbb`| -                  |
+| `i32x4.extmul_high_i16x8_s` |    `0xbd`| -                  |
+| `i32x4.extmul_low_i16x8_u`  |    `0xbe`| -                  |
+| `i32x4.extmul_high_i16x8_u` |    `0xbf`| -                  |
+| `i64x2.extmul_low_i32x4_s`  |    `0xd2`| -                  |
+| `i64x2.extmul_high_i32x4_s` |    `0xd3`| -                  |
+| `i64x2.extmul_low_i32x4_u`  |    `0xd6`| -                  |
+| `i64x2.extmul_high_i32x4_u` |    `0xd7`| -                  |