diff --git a/docs/x86/optable.xml b/docs/x86/optable.xml
index 3bda858..ae81562 100644
--- a/docs/x86/optable.xml
+++ b/docs/x86/optable.xml
@@ -8276,6 +8276,16 @@
         <cpuid>rdrand</cpuid>
     </instruction>
 
+    <instruction>
+        <mnemonic>rdseed</mnemonic>
+        <def>
+            <pfx>oso rexr rexw rexx rexb</pfx>
+            <opc>0f c7 /mod=11 /reg=7</opc>
+            <opr>R</opr>
+        </def>
+        <cpuid>rdseed</cpuid>
+    </instruction>
+
     <instruction>
         <mnemonic>vmclear</mnemonic>
         <vendor>intel</vendor>