diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 6296ac65af..749de82110 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -6654,24 +6654,6 @@ storage.")
         ("rust-byteorder" ,rust-byteorder-1)
         ("rust-generic-array" ,rust-generic-array-0.12))))))
 
-(define-public rust-block-buffer-0.3
-  (package
-    (inherit rust-block-buffer-0.9)
-    (name "rust-block-buffer")
-    (version "0.3.3")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "block-buffer" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "1axki8f4rhnxvk6hlli4i53sgmi7c15ffryrv4757nzcp6cc4xm0"))))
-    (arguments
-     `(#:skip-build? #t
-       #:cargo-inputs
-       (("rust-arrayref" ,rust-arrayref-0.3)
-        ("rust-byte-tools" ,rust-byte-tools-0.2))))))
-
 (define-public rust-block-padding-0.3
   (package
     (name "rust-block-padding")