diff --git a/Instructions/InstEmitSimdArithmetic.cs b/Instructions/InstEmitSimdArithmetic.cs
index df84596..013d043 100644
--- a/Instructions/InstEmitSimdArithmetic.cs
+++ b/Instructions/InstEmitSimdArithmetic.cs
@@ -1380,6 +1380,22 @@ namespace ChocolArm64.Instructions
             });
         }
 
+        public static void Frintz_S(ILEmitterCtx context)
+        {
+            EmitScalarUnaryOpF(context, () =>
+            {
+                EmitUnaryMathCall(context, nameof(Math.Truncate));
+            });
+        }
+
+        public static void Frintz_V(ILEmitterCtx context)
+        {
+            EmitVectorUnaryOpF(context, () =>
+            {
+                EmitUnaryMathCall(context, nameof(Math.Truncate));
+            });
+        }
+
         public static void Frsqrte_S(ILEmitterCtx context)
         {
             EmitScalarUnaryOpF(context, () =>
diff --git a/OpCodeTable.cs b/OpCodeTable.cs
index 89510fb..845a48d 100644
--- a/OpCodeTable.cs
+++ b/OpCodeTable.cs
@@ -329,6 +329,8 @@ namespace ChocolArm64
             SetA64("0>0011101<100001100010xxxxxxxxxx", InstEmit.Frintp_V,        typeof(OpCodeSimd64));
             SetA64("000111100x100111010000xxxxxxxxxx", InstEmit.Frintx_S,        typeof(OpCodeSimd64));
             SetA64("0>1011100<100001100110xxxxxxxxxx", InstEmit.Frintx_V,        typeof(OpCodeSimd64));
+            SetA64("000111100x100101110000xxxxxxxxxx", InstEmit.Frintz_S,        typeof(OpCodeSimd64));
+            SetA64("0>0011101<100001100110xxxxxxxxxx", InstEmit.Frintz_V,        typeof(OpCodeSimd64));
             SetA64("011111101x100001110110xxxxxxxxxx", InstEmit.Frsqrte_S,       typeof(OpCodeSimd64));
             SetA64("0>1011101<100001110110xxxxxxxxxx", InstEmit.Frsqrte_V,       typeof(OpCodeSimd64));
             SetA64("010111101x1xxxxx111111xxxxxxxxxx", InstEmit.Frsqrts_S,       typeof(OpCodeSimdReg64));