diff --git a/README.md b/README.md
index 721478f..6913d15 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 Sandbox
 =
-Some basic sandboxing for i2pd using seccomp and Landlock.
+Some basic sandboxing for i2pd using [seccomp](http://wikiless.i2p/wiki/Seccomp) and [Landlock](https://docs.kernel.org/security/landlock.html).
 
 If you tested this please let me know how it worked.
 
@@ -32,17 +32,18 @@ If Landlock is built in but not enabled you can add "lsm=landlock" to the kernel
 
 Building
 -
-
+Copy the modified files to a complete set of i2pd sources. Then build.
 ```
 make SANDBOX=yes
 ```
 
 Tested
 -
+**i2pd-2.51.0**  
+✅ Debian 12.4 (x86-64)  
+✅ Debian 12.4 (aarch64)  
+
 **i2pd-2.50.2**  
 ✅ Debian 12.4 (x86-64)  
 ✅ Debian 12.4 (aarch64)  
 ❌ Raspberry Pi OS 2024-03-12 (aarch64). Fail: no Landlock support.  
-
-**i2pd-2.51**  
-✅ Debian 12.4 (x86-64)