diff --git a/README.md b/README.md
index d8aba7b..825f24a 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 detect cpu isa features with single-file for C/C++
 
 <table>
-<tr><td>CPU arch</td><td> &#9989; x86<br/>&#9989; arm </td></tr>
+<tr><td>CPU arch</td><td> &#9989; x86, x86-64<br/>&#9989; arm, aarch64</td></tr>
 <tr><td>OS</td><td>&#9989; Windows<br/>&#9989; Linux<br/>&#9989; macOS<br/>&#9989; Android<br/>&#9989; iOS</td></tr>
 <tr><td>Compiler</td><td>&#9989; GCC<br/>&#9989; Clang<br/>&#9989; MSVC</td></tr>
 </table>