diff --git a/include/spirv/unified1/spirv.bf b/include/spirv/unified1/spirv.bf
index dd7ea24e9..d4f621c5e 100644
--- a/include/spirv/unified1/spirv.bf
+++ b/include/spirv/unified1/spirv.bf
@@ -1781,6 +1781,7 @@ namespace Spv
             OpSubgroupAllEqualKHR = 4430,
             OpGroupNonUniformRotateKHR = 4431,
             OpSubgroupReadInvocationKHR = 4432,
+            OpExtInstWithForwardRefs = 4433,
             OpTraceRayKHR = 4445,
             OpExecuteCallableKHR = 4446,
             OpConvertUToAccelerationStructureKHR = 4447,
diff --git a/include/spirv/unified1/spirv.core.grammar.json b/include/spirv/unified1/spirv.core.grammar.json
index 8a45a1fd2..5fc3c1a96 100644
--- a/include/spirv/unified1/spirv.core.grammar.json
+++ b/include/spirv/unified1/spirv.core.grammar.json
@@ -4539,6 +4539,20 @@
       "extensions" : [ "SPV_KHR_shader_ballot" ],
       "version" : "None"
     },
+    {
+      "opname" : "OpExtInstWithForwardRefs",
+      "class"  : "Extension",
+      "opcode" : 4433,
+      "operands" : [
+        { "kind" : "IdResultType" },
+        { "kind" : "IdResult" },
+        { "kind" : "IdRef",                                     "name" : "'Set'" },
+        { "kind" : "LiteralExtInstInteger",                     "name" : "'Instruction'" },
+        { "kind" : "IdRef",                 "quantifier" : "*", "name" : "'Operand 1', +\n'Operand 2', +\n..." }
+      ],
+      "extensions" : [ "SPV_KHR_relaxed_extended_instruction" ],
+      "version": "None"
+    },
     {
       "opname" : "OpTraceRayKHR",
       "class"  : "Reserved",
diff --git a/include/spirv/unified1/spirv.cs b/include/spirv/unified1/spirv.cs
index bab4eb260..445cb9c84 100644
--- a/include/spirv/unified1/spirv.cs
+++ b/include/spirv/unified1/spirv.cs
@@ -1780,6 +1780,7 @@ public enum Op
             OpSubgroupAllEqualKHR = 4430,
             OpGroupNonUniformRotateKHR = 4431,
             OpSubgroupReadInvocationKHR = 4432,
+            OpExtInstWithForwardRefs = 4433,
             OpTraceRayKHR = 4445,
             OpExecuteCallableKHR = 4446,
             OpConvertUToAccelerationStructureKHR = 4447,
diff --git a/include/spirv/unified1/spirv.h b/include/spirv/unified1/spirv.h
index d7a92b9b8..980373d10 100644
--- a/include/spirv/unified1/spirv.h
+++ b/include/spirv/unified1/spirv.h
@@ -1776,6 +1776,7 @@ typedef enum SpvOp_ {
     SpvOpSubgroupAllEqualKHR = 4430,
     SpvOpGroupNonUniformRotateKHR = 4431,
     SpvOpSubgroupReadInvocationKHR = 4432,
+    SpvOpExtInstWithForwardRefs = 4433,
     SpvOpTraceRayKHR = 4445,
     SpvOpExecuteCallableKHR = 4446,
     SpvOpConvertUToAccelerationStructureKHR = 4447,
@@ -2523,6 +2524,7 @@ inline void SpvHasResultAndType(SpvOp opcode, bool *hasResult, bool *hasResultTy
     case SpvOpSubgroupAllEqualKHR: *hasResult = true; *hasResultType = true; break;
     case SpvOpGroupNonUniformRotateKHR: *hasResult = true; *hasResultType = true; break;
     case SpvOpSubgroupReadInvocationKHR: *hasResult = true; *hasResultType = true; break;
+    case SpvOpExtInstWithForwardRefs: *hasResult = true; *hasResultType = true; break;
     case SpvOpTraceRayKHR: *hasResult = false; *hasResultType = false; break;
     case SpvOpExecuteCallableKHR: *hasResult = false; *hasResultType = false; break;
     case SpvOpConvertUToAccelerationStructureKHR: *hasResult = true; *hasResultType = true; break;
@@ -4298,6 +4300,7 @@ inline const char* SpvOpToString(SpvOp value) {
     case SpvOpSubgroupAllEqualKHR: return "OpSubgroupAllEqualKHR";
     case SpvOpGroupNonUniformRotateKHR: return "OpGroupNonUniformRotateKHR";
     case SpvOpSubgroupReadInvocationKHR: return "OpSubgroupReadInvocationKHR";
+    case SpvOpExtInstWithForwardRefs: return "OpExtInstWithForwardRefs";
     case SpvOpTraceRayKHR: return "OpTraceRayKHR";
     case SpvOpExecuteCallableKHR: return "OpExecuteCallableKHR";
     case SpvOpConvertUToAccelerationStructureKHR: return "OpConvertUToAccelerationStructureKHR";
diff --git a/include/spirv/unified1/spirv.hpp b/include/spirv/unified1/spirv.hpp
index 03e3d802b..fd3ded43f 100644
--- a/include/spirv/unified1/spirv.hpp
+++ b/include/spirv/unified1/spirv.hpp
@@ -1772,6 +1772,7 @@ enum Op {
     OpSubgroupAllEqualKHR = 4430,
     OpGroupNonUniformRotateKHR = 4431,
     OpSubgroupReadInvocationKHR = 4432,
+    OpExtInstWithForwardRefs = 4433,
     OpTraceRayKHR = 4445,
     OpExecuteCallableKHR = 4446,
     OpConvertUToAccelerationStructureKHR = 4447,
@@ -2519,6 +2520,7 @@ inline void HasResultAndType(Op opcode, bool *hasResult, bool *hasResultType) {
     case OpSubgroupAllEqualKHR: *hasResult = true; *hasResultType = true; break;
     case OpGroupNonUniformRotateKHR: *hasResult = true; *hasResultType = true; break;
     case OpSubgroupReadInvocationKHR: *hasResult = true; *hasResultType = true; break;
+    case OpExtInstWithForwardRefs: *hasResult = true; *hasResultType = true; break;
     case OpTraceRayKHR: *hasResult = false; *hasResultType = false; break;
     case OpExecuteCallableKHR: *hasResult = false; *hasResultType = false; break;
     case OpConvertUToAccelerationStructureKHR: *hasResult = true; *hasResultType = true; break;
@@ -4294,6 +4296,7 @@ inline const char* OpToString(Op value) {
     case OpSubgroupAllEqualKHR: return "OpSubgroupAllEqualKHR";
     case OpGroupNonUniformRotateKHR: return "OpGroupNonUniformRotateKHR";
     case OpSubgroupReadInvocationKHR: return "OpSubgroupReadInvocationKHR";
+    case OpExtInstWithForwardRefs: return "OpExtInstWithForwardRefs";
     case OpTraceRayKHR: return "OpTraceRayKHR";
     case OpExecuteCallableKHR: return "OpExecuteCallableKHR";
     case OpConvertUToAccelerationStructureKHR: return "OpConvertUToAccelerationStructureKHR";
diff --git a/include/spirv/unified1/spirv.hpp11 b/include/spirv/unified1/spirv.hpp11
index 7b6f5948a..4087933ec 100644
--- a/include/spirv/unified1/spirv.hpp11
+++ b/include/spirv/unified1/spirv.hpp11
@@ -1772,6 +1772,7 @@ enum class Op : unsigned {
     OpSubgroupAllEqualKHR = 4430,
     OpGroupNonUniformRotateKHR = 4431,
     OpSubgroupReadInvocationKHR = 4432,
+    OpExtInstWithForwardRefs = 4433,
     OpTraceRayKHR = 4445,
     OpExecuteCallableKHR = 4446,
     OpConvertUToAccelerationStructureKHR = 4447,
@@ -2519,6 +2520,7 @@ inline void HasResultAndType(Op opcode, bool *hasResult, bool *hasResultType) {
     case Op::OpSubgroupAllEqualKHR: *hasResult = true; *hasResultType = true; break;
     case Op::OpGroupNonUniformRotateKHR: *hasResult = true; *hasResultType = true; break;
     case Op::OpSubgroupReadInvocationKHR: *hasResult = true; *hasResultType = true; break;
+    case Op::OpExtInstWithForwardRefs: *hasResult = true; *hasResultType = true; break;
     case Op::OpTraceRayKHR: *hasResult = false; *hasResultType = false; break;
     case Op::OpExecuteCallableKHR: *hasResult = false; *hasResultType = false; break;
     case Op::OpConvertUToAccelerationStructureKHR: *hasResult = true; *hasResultType = true; break;
@@ -4294,6 +4296,7 @@ inline const char* OpToString(Op value) {
     case OpSubgroupAllEqualKHR: return "OpSubgroupAllEqualKHR";
     case OpGroupNonUniformRotateKHR: return "OpGroupNonUniformRotateKHR";
     case OpSubgroupReadInvocationKHR: return "OpSubgroupReadInvocationKHR";
+    case OpExtInstWithForwardRefs: return "OpExtInstWithForwardRefs";
     case OpTraceRayKHR: return "OpTraceRayKHR";
     case OpExecuteCallableKHR: return "OpExecuteCallableKHR";
     case OpConvertUToAccelerationStructureKHR: return "OpConvertUToAccelerationStructureKHR";
diff --git a/include/spirv/unified1/spirv.json b/include/spirv/unified1/spirv.json
index a99f1cacc..21bc2431e 100644
--- a/include/spirv/unified1/spirv.json
+++ b/include/spirv/unified1/spirv.json
@@ -1771,6 +1771,7 @@
                     "OpSubgroupAllEqualKHR": 4430,
                     "OpGroupNonUniformRotateKHR": 4431,
                     "OpSubgroupReadInvocationKHR": 4432,
+                    "OpExtInstWithForwardRefs": 4433,
                     "OpTraceRayKHR": 4445,
                     "OpExecuteCallableKHR": 4446,
                     "OpConvertUToAccelerationStructureKHR": 4447,
diff --git a/include/spirv/unified1/spirv.lua b/include/spirv/unified1/spirv.lua
index 4df95b0d2..4b4bf5e7e 100644
--- a/include/spirv/unified1/spirv.lua
+++ b/include/spirv/unified1/spirv.lua
@@ -1714,6 +1714,7 @@ spv = {
         OpSubgroupAllEqualKHR = 4430,
         OpGroupNonUniformRotateKHR = 4431,
         OpSubgroupReadInvocationKHR = 4432,
+        OpExtInstWithForwardRefs = 4433,
         OpTraceRayKHR = 4445,
         OpExecuteCallableKHR = 4446,
         OpConvertUToAccelerationStructureKHR = 4447,
diff --git a/include/spirv/unified1/spirv.py b/include/spirv/unified1/spirv.py
index 8c0e90683..95bfcaa65 100644
--- a/include/spirv/unified1/spirv.py
+++ b/include/spirv/unified1/spirv.py
@@ -1714,6 +1714,7 @@
         'OpSubgroupAllEqualKHR' : 4430,
         'OpGroupNonUniformRotateKHR' : 4431,
         'OpSubgroupReadInvocationKHR' : 4432,
+        'OpExtInstWithForwardRefs' : 4433,
         'OpTraceRayKHR' : 4445,
         'OpExecuteCallableKHR' : 4446,
         'OpConvertUToAccelerationStructureKHR' : 4447,
diff --git a/include/spirv/unified1/spv.d b/include/spirv/unified1/spv.d
index 01f565574..93e6c76d4 100644
--- a/include/spirv/unified1/spv.d
+++ b/include/spirv/unified1/spv.d
@@ -1783,6 +1783,7 @@ enum Op : uint
     OpSubgroupAllEqualKHR = 4430,
     OpGroupNonUniformRotateKHR = 4431,
     OpSubgroupReadInvocationKHR = 4432,
+    OpExtInstWithForwardRefs = 4433,
     OpTraceRayKHR = 4445,
     OpExecuteCallableKHR = 4446,
     OpConvertUToAccelerationStructureKHR = 4447,