diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 8df7fd0316..5312a42a8c 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -7343,24 +7343,6 @@ (define-public rust-base64-0.9
        #:cargo-development-inputs
        (("rust-rand" ,rust-rand-0.4))))))
 
-(define-public rust-base64-0.6
-  (package
-    (inherit rust-base64-0.13)
-    (name "rust-base64")
-    (version "0.6.0")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "base64" version))
-       (file-name (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32 "1ja3c7wlzp3sb14f2ksp27x1mk8ycgh1391nnd7fvw01fnc4yhwn"))))
-    (arguments
-     `(#:skip-build? #t
-       #:cargo-inputs
-       (("rust-byteorder" ,rust-byteorder-1)
-        ("rust-safemem" ,rust-safemem-0.2))))))
-
 (define-public rust-base64ct-1
   (package
     (name "rust-base64ct")