diff --git a/libraries/stdlib/wasm/src/generated/_WasmOp.kt b/libraries/stdlib/wasm/src/generated/_WasmOp.kt
index cf9528d2a08..36f58dca653 100644
--- a/libraries/stdlib/wasm/src/generated/_WasmOp.kt
+++ b/libraries/stdlib/wasm/src/generated/_WasmOp.kt
@@ -216,13 +216,34 @@ internal annotation class WasmOp(val name: String) {
         const val GLOBAL_SET = "GLOBAL_SET"
         const val REF_NULL = "REF_NULL"
         const val REF_IS_NULL = "REF_IS_NULL"
-        const val REF_EQ = "REF_EQ"
         const val REF_FUNC = "REF_FUNC"
+        const val REF_AS_NOT_NULL = "REF_AS_NOT_NULL"
+        const val BR_ON_NULL = "BR_ON_NULL"
+        const val REF_EQ = "REF_EQ"
+        const val CALL_REF = "CALL_REF"
+        const val RETURN_CALL_REF = "RETURN_CALL_REF"
+        const val FUNC_BIND = "FUNC_BIND"
+        const val LET = "LET"
         const val STRUCT_NEW_WITH_RTT = "STRUCT_NEW_WITH_RTT"
+        const val STRUCT_NEW_DEFAULT_WITH_RTT = "STRUCT_NEW_DEFAULT_WITH_RTT"
         const val STRUCT_GET = "STRUCT_GET"
+        const val STRUCT_GET_S = "STRUCT_GET_S"
+        const val STRUCT_GET_U = "STRUCT_GET_U"
         const val STRUCT_SET = "STRUCT_SET"
-        const val REF_CAST = "REF_CAST"
+        const val ARRAY_NEW_WITH_RTT = "ARRAY_NEW_WITH_RTT"
+        const val ARRAY_NEW_DEFAULT_WITH_RTT = "ARRAY_NEW_DEFAULT_WITH_RTT"
+        const val ARRAY_GET = "ARRAY_GET"
+        const val ARRAY_GET_S = "ARRAY_GET_S"
+        const val ARRAY_GET_U = "ARRAY_GET_U"
+        const val ARRAY_SET = "ARRAY_SET"
+        const val ARRAY_LEN = "ARRAY_LEN"
+        const val I31_NEW = "I31_NEW"
+        const val I31_GET_S = "I31_GET_S"
+        const val I31_GET_U = "I31_GET_U"
         const val RTT_CANON = "RTT_CANON"
         const val RTT_SUB = "RTT_SUB"
+        const val REF_TEST = "REF_TEST"
+        const val REF_CAST = "REF_CAST"
+        const val BR_ON_CAST = "BR_ON_CAST"
     }
 }
diff --git a/wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/Operators.kt b/wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/Operators.kt
index 7b5f7cff947..bc8478ea310 100644
--- a/wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/Operators.kt
+++ b/wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/Operators.kt
@@ -16,6 +16,7 @@ enum class WasmImmediateKind {
     MEM_ARG,
 
     BLOCK_TYPE,
+    LOCAL_DEFS,
 
     FUNC_IDX,
     LOCAL_IDX,
@@ -319,18 +320,46 @@ enum class WasmOp(
     // Reference types
     REF_NULL("ref.null", 0xD0, HEAP_TYPE),
     REF_IS_NULL("ref.is_null", 0xD1),
-    REF_EQ("ref.eq", 0xD5),
     REF_FUNC("ref.func", 0xD2, FUNC_IDX),
+    REF_AS_NOT_NULL("ref.as_non_null", 0xD3),
+    BR_ON_NULL("br_on_null", 0xD4, LABEL_IDX),
+    REF_EQ("ref.eq", 0xD5),
+
+    CALL_REF("call_ref", 0x14),
+    RETURN_CALL_REF("return_call_ref", 0x15),
+    FUNC_BIND("func.bind", 0x16, FUNC_IDX),
+    LET("let", 0x17, listOf(BLOCK_TYPE, LOCAL_DEFS)),
 
     // GC
     STRUCT_NEW_WITH_RTT("struct.new_with_rtt", 0xFB_01, STRUCT_TYPE_IDX),
+    STRUCT_NEW_DEFAULT_WITH_RTT("struct.new_default_with_rtt", 0xFB_02, STRUCT_TYPE_IDX),
     STRUCT_GET("struct.get", 0xFB_03, listOf(STRUCT_TYPE_IDX, STRUCT_FIELD_IDX)),
+    STRUCT_GET_S("struct.get_s", 0xFB_04, listOf(STRUCT_TYPE_IDX, STRUCT_FIELD_IDX)),
+    STRUCT_GET_U("struct.get_u", 0xFB_05, listOf(STRUCT_TYPE_IDX, STRUCT_FIELD_IDX)),
     STRUCT_SET("struct.set", 0xFB_06, listOf(STRUCT_TYPE_IDX, STRUCT_FIELD_IDX)),
 
-    REF_CAST("ref.cast", 0xFB_41, listOf(HEAP_TYPE, HEAP_TYPE)),
-    RTT_CANON("rtt.canon", 0xFB_30, HEAP_TYPE),
-    RTT_SUB("rtt.sub", 0xFB_31, HEAP_TYPE);
+    ARRAY_NEW_WITH_RTT("array.new_with_rtt", 0xFB_11, STRUCT_TYPE_IDX),
+    ARRAY_NEW_DEFAULT_WITH_RTT("array.new_default_with_rtt", 0xFB_12, STRUCT_TYPE_IDX),
+    ARRAY_GET("array.get", 0xFB_13, listOf(STRUCT_TYPE_IDX)),
+    ARRAY_GET_S("array.get_s", 0xFB_14, listOf(STRUCT_TYPE_IDX)),
+    ARRAY_GET_U("array.get_u", 0xFB_15, listOf(STRUCT_TYPE_IDX)),
+    ARRAY_SET("array.set", 0xFB_16, listOf(STRUCT_TYPE_IDX)),
+    ARRAY_LEN("array.len", 0xFB_17, listOf(STRUCT_TYPE_IDX)),
 
+    I31_NEW("i31.new", 0xFB_20),
+    I31_GET_S("i31.get_s", 0xFB_21),
+    I31_GET_U("i31.get_u", 0xFB_22),
+
+    RTT_CANON("rtt.canon", 0xFB_30, HEAP_TYPE),
+
+    // TODO: GC spec also has "depth" and "input heap type" immediates. V8 currently implements without them.
+    RTT_SUB("rtt.sub", 0xFB_31, HEAP_TYPE),
+    REF_TEST("ref.test", 0xFB_40, listOf(HEAP_TYPE, HEAP_TYPE)),
+    REF_CAST("ref.cast", 0xFB_41, listOf(HEAP_TYPE, HEAP_TYPE)),
+
+    // TODO: GC spec also has two heap type immediates. V8 currently implements without them.
+    BR_ON_CAST("br_on_cast", 0xFB_42, listOf(LABEL_IDX)),
+    ;
 
     constructor(mnemonic: String, opcode: Int, vararg immediates: WasmImmediateKind) : this(mnemonic, opcode, immediates.toList())
 }
diff --git a/wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/convertors/WasmBinaryToIR.kt b/wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/convertors/WasmBinaryToIR.kt
index a9c38336fc4..7490004f8b2 100644
--- a/wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/convertors/WasmBinaryToIR.kt
+++ b/wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/convertors/WasmBinaryToIR.kt
@@ -411,6 +411,7 @@ class WasmBinaryToIR(val b: MyByteReader) {
                 WasmImmediateKind.STRUCT_FIELD_IDX -> TODO()
                 WasmImmediateKind.TYPE_IMM -> TODO()
                 WasmImmediateKind.HEAP_TYPE -> WasmImmediate.HeapType(readRefType())
+                WasmImmediateKind.LOCAL_DEFS -> TODO()
             }
         }