diff --git a/mercurial/helptext/rust.txt b/mercurial/helptext/rust.txt
--- a/mercurial/helptext/rust.txt
+++ b/mercurial/helptext/rust.txt
@@ -76,8 +76,8 @@ instructions on how to install from sour
 MSRV
 ====
 
-The minimum supported Rust version is currently 1.48.0. The project's policy is
-to follow the version from Debian stable, to make the distributions' job easier.
+The minimum supported Rust version is currently 1.61.0. The project's policy is
+to follow the version from Debian testing, to make the distributions' job easier.
 
 rhg
 ===
diff --git a/rust/README.rst b/rust/README.rst
--- a/rust/README.rst
+++ b/rust/README.rst
@@ -77,8 +77,8 @@ Example usage:
 Developing Rust
 ===============
 
-The current version of Rust in use is ``1.48.0``, because it's what Debian
-stable has. You can use ``rustup override set 1.48.0`` at the root of the repo
+The current version of Rust in use is ``1.61.0``, because it's what Debian
+testing has. You can use ``rustup override set 1.61.0`` at the root of the repo
 to make it easier on you.
 
 Go to the ``hg-cpython`` folder::