diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 1a044e9b66..5c0395cdcf 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -28255,8 +28255,37 @@ nitrokey crate and others using it.")
 nitrokey-test crate.")
     (license license:gpl3+)))
 
+(define-public rust-nix-0.21
+  (package
+    (name "rust-nix")
+    (version "0.21.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "nix" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1isfgr239sxvkcjhcp08rz2nqi4s6w5ik2l2m183ldlxqkz2hdsw"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:skip-build? #t
+       #:cargo-inputs
+       (("rust-bitflags" ,rust-bitflags-1)
+        ("rust-cc" ,rust-cc-1)
+        ("rust-cfg-if" ,rust-cfg-if-1)
+        ("rust-libc" ,rust-libc-0.2)
+        ("rust-memoffset" ,rust-memoffset-0.6))))
+    (home-page "https://github.com/nix-rust/nix")
+    (synopsis "Rust friendly bindings to *nix APIs")
+    (description
+     "Nix seeks to provide friendly bindings to various *nix platform APIs.
+The goal is to not provide a 100% unified interface, but to unify what can be
+while still providing platform specific APIs.")
+    (license license:expat)))
+
 (define-public rust-nix-0.20
   (package
+    (inherit rust-nix-0.21)
     (name "rust-nix")
     (version "0.20.0")
     (source
@@ -28266,21 +28295,13 @@ nitrokey-test crate.")
        (file-name (string-append name "-" version ".tar.gz"))
        (sha256
         (base32 "12n1syfd967hblrcrrqk63a4s1h4hsybfqwblh71rihvv8cli6zs"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:skip-build? #t
        #:cargo-inputs
        (("rust-bitflags" ,rust-bitflags-1)
         ("rust-cc" ,rust-cc-1)
         ("rust-cfg-if" ,rust-cfg-if-1)
-        ("rust-libc" ,rust-libc-0.2))))
-    (home-page "https://github.com/nix-rust/nix")
-    (synopsis "Rust friendly bindings to *nix APIs")
-    (description
-     "Nix seeks to provide friendly bindings to various *nix platform APIs.
-The goal is to not provide a 100% unified interface, but to unify what can be
-while still providing platform specific APIs.")
-    (license license:expat)))
+        ("rust-libc" ,rust-libc-0.2))))))
 
 (define-public rust-nix-0.19
   (package