diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 0d306f3706..a00d7066ba 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -26039,26 +26039,6 @@ Hash-based Message Authentication Code}.")
        (("rust-crypto-mac" ,rust-crypto-mac-0.5)
         ("rust-digest" ,rust-digest-0.7))))))
 
-(define-public rust-hmac-0.4
-  (package
-    (inherit rust-hmac-0.8)
-    (name "rust-hmac")
-    (version "0.4.2")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "hmac" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "0amfn9wggxapyva1i0j7wldy9chj487cxal4wldwmid078bg84vs"))))
-    (arguments
-     `(#:skip-build?
-       #t
-       #:cargo-inputs
-       (("rust-crypto-mac" ,rust-crypto-mac-0.4)
-        ("rust-digest" ,rust-digest-0.6)
-        ("rust-generic-array" ,rust-generic-array-0.8))))))
-
 (define-public rust-hmac-sha1-0.1
   (package
     (name "rust-hmac-sha1")