diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 3b5fa035f0..a238ae60dc 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -61366,7 +61366,7 @@ (define-public rust-test-assembler-0.1
     (arguments
      `(#:skip-build? #t
        #:cargo-inputs
-       (("rust-byteorder" ,rust-byteorder-1))))
+       (("rust-byteorder" ,rust-byteorder-0.5))))
     (home-page "https://github.com/luser/rust-test-assembler")
     (synopsis "Build complex binary streams")
     (description