diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
index 746c4f3691..20fec5b6a6 100644
--- a/gnu/packages/crates-io.scm
+++ b/gnu/packages/crates-io.scm
@@ -50664,38 +50664,6 @@ macOS and iOS.")
         (base32
          "11icfj8ix8fqjsnw3dqw83bmhd5qdhxzq2klb486akyypq0b31hv"))))))
 
-(define-public rust-sema-0.1
-  (package
-    (name "rust-sema")
-    (version "0.1.4")
-    (source
-     (origin
-       (method url-fetch)
-       (uri (crate-uri "sema" version))
-       (file-name
-        (string-append name "-" version ".tar.gz"))
-       (sha256
-        (base32
-         "0ckq33sg84785p195m54h03jcn7fai8w08hjnb94nzaakgzibbz3"))
-        (modules '((guix build utils)))
-        (snippet
-         '(begin (substitute* "Cargo.toml"
-                   (("libc.*") "libc = \"0.2\"\n"))
-                 #t))))
-    (build-system cargo-build-system)
-    (arguments
-     `( #:cargo-inputs
-       (("rust-libc" ,rust-libc-0.2)
-        ("rust-rand" ,rust-rand-0.3)
-        ("rust-time" ,rust-time-0.1))
-       #:cargo-development-inputs
-       (("rust-lazy-static" ,rust-lazy-static-1)
-        ("rust-nix" ,rust-nix-0.15))))
-    (home-page "https://github.com/cpjreynolds/sema")
-    (synopsis "Rust semaphore library")
-    (description "Rust semaphore library.")
-    (license license:expat)))
-
 (define-public rust-semver-1
   (package
     (name "rust-semver")