diff --git a/asm.js b/asm.js
index 5041d3f..4748b02 100644
--- a/asm.js
+++ b/asm.js
@@ -161,6 +161,7 @@ const opcodes = {
     "i32.store":     0x36,
     "i32.store8":    0x3a,
     "i32.const":     0x41,
+    "i64.const":     0x42,
     "i32.eqz":       0x45,
     "i32.eq":        0x46,
     "i32.ne":        0x47,
@@ -175,6 +176,8 @@ const opcodes = {
     "i32.add":       0x6a,
     "i32.sub":       0x6b,
     "i32.mul":       0x6c,
+	"i32.div_s":     0x6d,
+	"i32.rem_s":     0x6f,
     "i32.and":       0x71,
     "i32.or":        0x72,
     "i32.xor":       0x73,