diff --git a/AUTHORS b/AUTHORS
index 5eff238a..218e7a38 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -24,7 +24,7 @@ Authors of XZ Utils
     by Michał Górny.
 
     Architecture-specific CRC optimizations were contributed by
-    Ilya Kurdyukov, Hans Jansen, and Chenxi Mao.
+    Ilya Kurdyukov, Hans Jansen, Chenxi Mao, and Xi Ruoyao.
 
     Other authors:
       - Jonathan Nieder
diff --git a/THANKS b/THANKS
index 7ce17501..aef78eb1 100644
--- a/THANKS
+++ b/THANKS
@@ -182,6 +182,7 @@ has been important. :-) In alphabetical order:
   - Lars Wirzenius
   - Pilorz Wojciech
   - Chien Wong
+  - Xi Ruoyao
   - Ryan Young
   - Andreas Zieringer