diff --git a/library/std/src/random.rs b/library/std/src/random.rs
index 3994c5cfaf6f4..a18dcf98ec7fc 100644
--- a/library/std/src/random.rs
+++ b/library/std/src/random.rs
@@ -37,7 +37,7 @@ use crate::sys::random as sys;
 /// Horizon, Cygwin        | `getrandom`
 /// AIX, Hurd, L4Re, QNX   | `/dev/urandom`
 /// Redox                  | `/scheme/rand`
-/// RTEMS                  | [`arc4random_buf`](https://docs.rtems.org/branches/master/bsp-howto/getentropy.html)
+/// RTEMS                  | [`arc4random_buf`](https://docs.rtems.org/branches/main/bsp-howto/getentropy.html)
 /// SGX                    | [`rdrand`](https://en.wikipedia.org/wiki/RDRAND)
 /// SOLID                  | `SOLID_RNG_SampleRandomBytes`
 /// TEEOS                  | `TEE_GenerateRandom`