diff --git a/include/spirv/unified1/spirv.bf b/include/spirv/unified1/spirv.bf
index 6142db577..eaa465f85 100644
--- a/include/spirv/unified1/spirv.bf
+++ b/include/spirv/unified1/spirv.bf
@@ -1841,6 +1841,7 @@ namespace Spv
             OpUntypedPtrAccessChainKHR = 4423,
             OpUntypedInBoundsPtrAccessChainKHR = 4424,
             OpUntypedArrayLengthKHR = 4425,
+            OpUntypedPrefetchKHR = 4426,
             OpSubgroupAllKHR = 4428,
             OpSubgroupAnyKHR = 4429,
             OpSubgroupAllEqualKHR = 4430,
diff --git a/include/spirv/unified1/spirv.core.grammar.json b/include/spirv/unified1/spirv.core.grammar.json
index a886c4617..75486b090 100644
--- a/include/spirv/unified1/spirv.core.grammar.json
+++ b/include/spirv/unified1/spirv.core.grammar.json
@@ -4568,6 +4568,20 @@
         { "kind" : "LiteralInteger",                   "name" : "'Array member'" }
       ]
     },
+    {
+      "opname" : "OpUntypedPrefetchKHR",
+      "class"  : "Memory",
+      "opcode" : 4426,
+      "capabilities" : [ "UntypedPointersKHR" ],
+      "version" : "None",
+      "operands" : [
+        { "kind" : "IdRef",                            "name" : "'Pointer Type'" },
+        { "kind" : "IdRef",                            "name" : "'Num Bytes'" },
+        { "kind" : "IdRef",        "quantifier" : "?", "name" : "'RW'" },
+        { "kind" : "IdRef",        "quantifier" : "?", "name" : "'Locality'" },
+        { "kind" : "IdRef",        "quantifier" : "?", "name" : "'Cache Type'" }
+      ]
+    },
     {
       "opname" : "OpSubgroupAllKHR",
       "class"  : "Group",
diff --git a/include/spirv/unified1/spirv.cs b/include/spirv/unified1/spirv.cs
index e01528887..b4bb13f1f 100644
--- a/include/spirv/unified1/spirv.cs
+++ b/include/spirv/unified1/spirv.cs
@@ -1840,6 +1840,7 @@ public enum Op
             OpUntypedPtrAccessChainKHR = 4423,
             OpUntypedInBoundsPtrAccessChainKHR = 4424,
             OpUntypedArrayLengthKHR = 4425,
+            OpUntypedPrefetchKHR = 4426,
             OpSubgroupAllKHR = 4428,
             OpSubgroupAnyKHR = 4429,
             OpSubgroupAllEqualKHR = 4430,
diff --git a/include/spirv/unified1/spirv.h b/include/spirv/unified1/spirv.h
index b58eac55b..c834df614 100644
--- a/include/spirv/unified1/spirv.h
+++ b/include/spirv/unified1/spirv.h
@@ -1786,6 +1786,7 @@ typedef enum SpvOp_ {
     SpvOpUntypedPtrAccessChainKHR = 4423,
     SpvOpUntypedInBoundsPtrAccessChainKHR = 4424,
     SpvOpUntypedArrayLengthKHR = 4425,
+    SpvOpUntypedPrefetchKHR = 4426,
     SpvOpSubgroupAllKHR = 4428,
     SpvOpSubgroupAnyKHR = 4429,
     SpvOpSubgroupAllEqualKHR = 4430,
@@ -2541,6 +2542,7 @@ inline void SpvHasResultAndType(SpvOp opcode, bool *hasResult, bool *hasResultTy
     case SpvOpUntypedPtrAccessChainKHR: *hasResult = true; *hasResultType = true; break;
     case SpvOpUntypedInBoundsPtrAccessChainKHR: *hasResult = true; *hasResultType = true; break;
     case SpvOpUntypedArrayLengthKHR: *hasResult = true; *hasResultType = true; break;
+    case SpvOpUntypedPrefetchKHR: *hasResult = false; *hasResultType = false; break;
     case SpvOpSubgroupAllKHR: *hasResult = true; *hasResultType = true; break;
     case SpvOpSubgroupAnyKHR: *hasResult = true; *hasResultType = true; break;
     case SpvOpSubgroupAllEqualKHR: *hasResult = true; *hasResultType = true; break;
@@ -4334,6 +4336,7 @@ inline const char* SpvOpToString(SpvOp value) {
     case SpvOpUntypedPtrAccessChainKHR: return "OpUntypedPtrAccessChainKHR";
     case SpvOpUntypedInBoundsPtrAccessChainKHR: return "OpUntypedInBoundsPtrAccessChainKHR";
     case SpvOpUntypedArrayLengthKHR: return "OpUntypedArrayLengthKHR";
+    case SpvOpUntypedPrefetchKHR: return "OpUntypedPrefetchKHR";
     case SpvOpSubgroupAllKHR: return "OpSubgroupAllKHR";
     case SpvOpSubgroupAnyKHR: return "OpSubgroupAnyKHR";
     case SpvOpSubgroupAllEqualKHR: return "OpSubgroupAllEqualKHR";
diff --git a/include/spirv/unified1/spirv.hpp b/include/spirv/unified1/spirv.hpp
index 5690ada85..c057d71de 100644
--- a/include/spirv/unified1/spirv.hpp
+++ b/include/spirv/unified1/spirv.hpp
@@ -1782,6 +1782,7 @@ enum Op {
     OpUntypedPtrAccessChainKHR = 4423,
     OpUntypedInBoundsPtrAccessChainKHR = 4424,
     OpUntypedArrayLengthKHR = 4425,
+    OpUntypedPrefetchKHR = 4426,
     OpSubgroupAllKHR = 4428,
     OpSubgroupAnyKHR = 4429,
     OpSubgroupAllEqualKHR = 4430,
@@ -2537,6 +2538,7 @@ inline void HasResultAndType(Op opcode, bool *hasResult, bool *hasResultType) {
     case OpUntypedPtrAccessChainKHR: *hasResult = true; *hasResultType = true; break;
     case OpUntypedInBoundsPtrAccessChainKHR: *hasResult = true; *hasResultType = true; break;
     case OpUntypedArrayLengthKHR: *hasResult = true; *hasResultType = true; break;
+    case OpUntypedPrefetchKHR: *hasResult = false; *hasResultType = false; break;
     case OpSubgroupAllKHR: *hasResult = true; *hasResultType = true; break;
     case OpSubgroupAnyKHR: *hasResult = true; *hasResultType = true; break;
     case OpSubgroupAllEqualKHR: *hasResult = true; *hasResultType = true; break;
@@ -4330,6 +4332,7 @@ inline const char* OpToString(Op value) {
     case OpUntypedPtrAccessChainKHR: return "OpUntypedPtrAccessChainKHR";
     case OpUntypedInBoundsPtrAccessChainKHR: return "OpUntypedInBoundsPtrAccessChainKHR";
     case OpUntypedArrayLengthKHR: return "OpUntypedArrayLengthKHR";
+    case OpUntypedPrefetchKHR: return "OpUntypedPrefetchKHR";
     case OpSubgroupAllKHR: return "OpSubgroupAllKHR";
     case OpSubgroupAnyKHR: return "OpSubgroupAnyKHR";
     case OpSubgroupAllEqualKHR: return "OpSubgroupAllEqualKHR";
diff --git a/include/spirv/unified1/spirv.hpp11 b/include/spirv/unified1/spirv.hpp11
index 0e621b505..1c336a7c3 100644
--- a/include/spirv/unified1/spirv.hpp11
+++ b/include/spirv/unified1/spirv.hpp11
@@ -1782,6 +1782,7 @@ enum class Op : unsigned {
     OpUntypedPtrAccessChainKHR = 4423,
     OpUntypedInBoundsPtrAccessChainKHR = 4424,
     OpUntypedArrayLengthKHR = 4425,
+    OpUntypedPrefetchKHR = 4426,
     OpSubgroupAllKHR = 4428,
     OpSubgroupAnyKHR = 4429,
     OpSubgroupAllEqualKHR = 4430,
@@ -2537,6 +2538,7 @@ inline void HasResultAndType(Op opcode, bool *hasResult, bool *hasResultType) {
     case Op::OpUntypedPtrAccessChainKHR: *hasResult = true; *hasResultType = true; break;
     case Op::OpUntypedInBoundsPtrAccessChainKHR: *hasResult = true; *hasResultType = true; break;
     case Op::OpUntypedArrayLengthKHR: *hasResult = true; *hasResultType = true; break;
+    case Op::OpUntypedPrefetchKHR: *hasResult = false; *hasResultType = false; break;
     case Op::OpSubgroupAllKHR: *hasResult = true; *hasResultType = true; break;
     case Op::OpSubgroupAnyKHR: *hasResult = true; *hasResultType = true; break;
     case Op::OpSubgroupAllEqualKHR: *hasResult = true; *hasResultType = true; break;
@@ -4330,6 +4332,7 @@ inline const char* OpToString(Op value) {
     case OpUntypedPtrAccessChainKHR: return "OpUntypedPtrAccessChainKHR";
     case OpUntypedInBoundsPtrAccessChainKHR: return "OpUntypedInBoundsPtrAccessChainKHR";
     case OpUntypedArrayLengthKHR: return "OpUntypedArrayLengthKHR";
+    case OpUntypedPrefetchKHR: return "OpUntypedPrefetchKHR";
     case OpSubgroupAllKHR: return "OpSubgroupAllKHR";
     case OpSubgroupAnyKHR: return "OpSubgroupAnyKHR";
     case OpSubgroupAllEqualKHR: return "OpSubgroupAllEqualKHR";
diff --git a/include/spirv/unified1/spirv.json b/include/spirv/unified1/spirv.json
index 4eeb0549a..90520d8bd 100644
--- a/include/spirv/unified1/spirv.json
+++ b/include/spirv/unified1/spirv.json
@@ -1784,6 +1784,7 @@
                     "OpUntypedPtrAccessChainKHR": 4423,
                     "OpUntypedInBoundsPtrAccessChainKHR": 4424,
                     "OpUntypedArrayLengthKHR": 4425,
+                    "OpUntypedPrefetchKHR": 4426,
                     "OpSubgroupAllKHR": 4428,
                     "OpSubgroupAnyKHR": 4429,
                     "OpSubgroupAllEqualKHR": 4430,
diff --git a/include/spirv/unified1/spirv.lua b/include/spirv/unified1/spirv.lua
index 4136076a0..fa6cd2974 100644
--- a/include/spirv/unified1/spirv.lua
+++ b/include/spirv/unified1/spirv.lua
@@ -1773,6 +1773,7 @@ spv = {
         OpUntypedPtrAccessChainKHR = 4423,
         OpUntypedInBoundsPtrAccessChainKHR = 4424,
         OpUntypedArrayLengthKHR = 4425,
+        OpUntypedPrefetchKHR = 4426,
         OpSubgroupAllKHR = 4428,
         OpSubgroupAnyKHR = 4429,
         OpSubgroupAllEqualKHR = 4430,
diff --git a/include/spirv/unified1/spirv.py b/include/spirv/unified1/spirv.py
index d1e5d854d..a4dce5ee6 100644
--- a/include/spirv/unified1/spirv.py
+++ b/include/spirv/unified1/spirv.py
@@ -1723,6 +1723,7 @@
         'OpUntypedPtrAccessChainKHR' : 4423,
         'OpUntypedInBoundsPtrAccessChainKHR' : 4424,
         'OpUntypedArrayLengthKHR' : 4425,
+        'OpUntypedPrefetchKHR' : 4426,
         'OpSubgroupAllKHR' : 4428,
         'OpSubgroupAnyKHR' : 4429,
         'OpSubgroupAllEqualKHR' : 4430,
diff --git a/include/spirv/unified1/spv.d b/include/spirv/unified1/spv.d
index 796b8242e..d5917293a 100644
--- a/include/spirv/unified1/spv.d
+++ b/include/spirv/unified1/spv.d
@@ -1843,6 +1843,7 @@ enum Op : uint
     OpUntypedPtrAccessChainKHR = 4423,
     OpUntypedInBoundsPtrAccessChainKHR = 4424,
     OpUntypedArrayLengthKHR = 4425,
+    OpUntypedPrefetchKHR = 4426,
     OpSubgroupAllKHR = 4428,
     OpSubgroupAnyKHR = 4429,
     OpSubgroupAllEqualKHR = 4430,