diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index ffd0dbc881..1d6db260a6 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -53678,6 +53678,27 @@ (define-public rust-serde-repr-0.1
 of a C-like enum.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-serde-spanned-0.6
+  (package
+    (name "rust-serde-spanned")
+    (version "0.6.1")
+    (source (origin
+              (method url-fetch)
+              (uri (crate-uri "serde-spanned" version))
+              (file-name (string-append name "-" version ".tar.gz"))
+              (sha256
+               (base32 "1x7wqhqay4bgkaq8dmvb9z01mk2z0j0g9jl5nb9ynv3aanpqrz8f"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-serde" ,rust-serde-1))))
+    (home-page "https://github.com/toml-rs/toml")
+    (synopsis "Encoder and decoder of TOML-formatted files and streams")
+    (description "This package provides a native Rust encoder and decoder of
+TOML-formatted files and streams.  Provides implementations of the standard
+Serialize/Deserialize traits for TOML data to facilitate deserializing and
+serializing Rust structures.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-serde-stacker-0.1
   (package
     (name "rust-serde-stacker")