diff --git a/README.md b/README.md
index b58a1ef75..b1b25ceeb 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,11 @@
 <p align="center">
     <img src="docs/src/images/logo_en.svg" alt="asterinas-logo" width="620"><br>
-    A safe, fast, and general-purpose OS kernel written in Rust and compatible with Linux
+    A secure, fast, and general-purpose OS kernel written in Rust and compatible with Linux
 </p>
 
 ## Introducing Asterinas
 
-Asterinas (星绽 in Chinese) is a _safe_, _fast_, and _general-purpose_ OS kernel
+Asterinas (星绽 in Chinese) is a _secure_, _fast_, and _general-purpose_ OS kernel
 that provides _Linux-compatible_ ABI.
 It can serve as a seamless replacement for Linux
 while enhancing _memory safety_ and _developer friendliness_.
diff --git a/docs/src/kernel/README.md b/docs/src/kernel/README.md
index d7a36779f..79767a2d7 100644
--- a/docs/src/kernel/README.md
+++ b/docs/src/kernel/README.md
@@ -2,7 +2,7 @@
 
 ## Overview
 
-Asterinas is a _safe_, _fast_, and _general-purpose_ OS kernel
+Asterinas is a _secure_, _fast_, and _general-purpose_ OS kernel
 that provides _Linux-compatible_ ABI.
 It can serve as a seamless replacement for Linux
 while enhancing _memory safety_ and _developer friendliness_.