diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index d73999cba8..dbdc7974fe 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -29358,6 +29358,19 @@ float literals.  Two functions @code{parse_hexf32} and @code{parse_hexf64} are
 provided for each type.")
     (license license:cc0)))
 
+(define-public rust-hexf-parse-0.1
+  (package
+    (inherit rust-hexf-parse-0.2)
+    (name "rust-hexf-parse")
+    (version "0.1.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "hexf-parse" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1b2h0lvksn8748764x46729ygpz8grack24spin0k29ssmr6yabr"))))))
+
 (define-public rust-hostname-0.3
   (package
     (name "rust-hostname")