diff --git a/gnu/packages/rust-apps.scm b/gnu/packages/rust-apps.scm
index 4454178624..e20fecb87a 100644
--- a/gnu/packages/rust-apps.scm
+++ b/gnu/packages/rust-apps.scm
@@ -844,93 +844,104 @@ (define-public i3status-rust
 (define-public just
   (package
     (name "just")
-    (version "1.14.0")
+    (version "1.17.0")
     (source (origin
               (method url-fetch)
               (uri (crate-uri "just" version))
               (file-name (string-append name "-" version ".tar.gz"))
               (sha256
-               (base32 "0kafd87zmjf7wswyiqakqd2r5b8q3a761ipsihmrg9wr57k5zlis"))))
+               (base32 "1nlwrbawgg6sysfydi2334y4pbsinq50axnqm0cz0m29r8n0ljxd"))))
     (build-system cargo-build-system)
     (arguments
-     `(#:cargo-test-flags
-       '("--release" "--"
-         "--skip=functions::env_var_functions"
-         "--skip=string::shebang_backtick")
+     (list
+      #:cargo-test-flags
+      '(list "--release" "--"
+             "--skip=functions::env_var_functions"
+             "--skip=string::shebang_backtick")
        #:install-source? #f
        #:cargo-inputs
-       (("rust-ansi-term" ,rust-ansi-term-0.12)
-        ("rust-atty" ,rust-atty-0.2)
-        ("rust-camino" ,rust-camino-1)
-        ("rust-clap" ,rust-clap-2)
-        ("rust-ctrlc" ,rust-ctrlc-3)
-        ("rust-derivative" ,rust-derivative-2)
-        ("rust-dotenvy" ,rust-dotenvy-0.15)
-        ("rust-edit-distance" ,rust-edit-distance-2)
-        ("rust-env-logger" ,rust-env-logger-0.10)
-        ("rust-heck" ,rust-heck-0.4)
-        ("rust-lexiclean" ,rust-lexiclean-0.0.1)
-        ("rust-libc" ,rust-libc-0.2)
-        ("rust-log" ,rust-log-0.4)
-        ("rust-regex" ,rust-regex-1)
-        ("rust-serde" ,rust-serde-1)
-        ("rust-serde-json" ,rust-serde-json-1)
-        ("rust-sha2" ,rust-sha2-0.10)
-        ("rust-similar" ,rust-similar-2)
-        ("rust-snafu" ,rust-snafu-0.7)
-        ("rust-strum" ,rust-strum-0.24)
-        ("rust-target" ,rust-target-2)
-        ("rust-tempfile" ,rust-tempfile-3)
-        ("rust-typed-arena" ,rust-typed-arena-2)
-        ("rust-unicode-width" ,rust-unicode-width-0.1)
-        ("rust-uuid" ,rust-uuid-1))
+       `(("rust-ansi-term" ,rust-ansi-term-0.12)
+         ("rust-atty" ,rust-atty-0.2)
+         ("rust-camino" ,rust-camino-1)
+         ("rust-clap" ,rust-clap-2)
+         ("rust-ctrlc" ,rust-ctrlc-3)
+         ("rust-derivative" ,rust-derivative-2)
+         ("rust-dotenvy" ,rust-dotenvy-0.15)
+         ("rust-edit-distance" ,rust-edit-distance-2)
+         ("rust-env-logger" ,rust-env-logger-0.10)
+         ("rust-heck" ,rust-heck-0.4)
+         ("rust-lexiclean" ,rust-lexiclean-0.0.1)
+         ("rust-libc" ,rust-libc-0.2)
+         ("rust-log" ,rust-log-0.4)
+         ("rust-num-cpus" ,rust-num-cpus-1)
+         ("rust-regex" ,rust-regex-1)
+         ("rust-semver" ,rust-semver-1)
+         ("rust-serde" ,rust-serde-1)
+         ("rust-serde-json" ,rust-serde-json-1)
+         ("rust-sha2" ,rust-sha2-0.10)
+         ("rust-similar" ,rust-similar-2)
+         ("rust-snafu" ,rust-snafu-0.7)
+         ("rust-strum" ,rust-strum-0.25)
+         ("rust-target" ,rust-target-2)
+         ("rust-tempfile" ,rust-tempfile-3)
+         ("rust-typed-arena" ,rust-typed-arena-2)
+         ("rust-unicode-width" ,rust-unicode-width-0.1)
+         ("rust-uuid" ,rust-uuid-1))
        #:cargo-development-inputs
-       (("rust-cradle" ,rust-cradle-0.2)
-        ("rust-executable-path" ,rust-executable-path-1)
-        ("rust-pretty-assertions" ,rust-pretty-assertions-1)
-        ("rust-temptree" ,rust-temptree-0.2)
-        ("rust-which" ,rust-which-4)
-        ("rust-yaml-rust" ,rust-yaml-rust-0.4))
+       `(("rust-cradle" ,rust-cradle-0.2)
+         ("rust-executable-path" ,rust-executable-path-1)
+         ("rust-pretty-assertions" ,rust-pretty-assertions-1)
+         ("rust-temptree" ,rust-temptree-0.2)
+         ("rust-which" ,rust-which-5)
+         ("rust-yaml-rust" ,rust-yaml-rust-0.4))
        #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'replace-hardcoded-paths
-           (lambda* (#:key inputs #:allow-other-keys)
-             (substitute* (cons "src/justfile.rs"
-                                (find-files "tests/" "\\.rs$"))
-               (("/bin/sh")
-                (search-input-file inputs "/bin/sh"))
-               (("/usr/bin/env sh")
-                (search-input-file inputs "/bin/sh"))
-               (("/usr/bin/env")
-                (search-input-file inputs "/bin/env"))
-               (("/bin/echo")
-                (search-input-file inputs "/bin/echo")))))
-         (add-after 'install 'install-manpage
-           (lambda* (#:key outputs #:allow-other-keys)
-             (install-file "man/just.1"
-                           (string-append (assoc-ref outputs "out")
-                                          "/share/man/man1"))))
-         (add-after 'install 'install-completions
-           (lambda* (#:key outputs #:allow-other-keys)
-             (let* ((out (assoc-ref outputs "out"))
-                    (share (string-append out "/share"))
-                    (just (string-append out "/bin/just")))
-               (mkdir-p (string-append share "/bash-completion/completions"))
-               (with-output-to-file
-                 (string-append share "/bash-completion/completions/just")
-                 (lambda _ (invoke just "--completions" "bash")))
-               (mkdir-p (string-append share "/fish/vendor_completions.d"))
-               (with-output-to-file
-                 (string-append share "/fish/vendor_completions.d/just.fish")
-                 (lambda _ (invoke just "--completions" "fish")))
-               (mkdir-p (string-append share "/zsh/site-functions"))
-               (with-output-to-file
-                 (string-append share "/zsh/site-functions/_just")
-                 (lambda _ (invoke just "--completions" "zsh")))
-               (mkdir-p (string-append share "/elvish/lib"))
-               (with-output-to-file
-                 (string-append share "/elvish/lib/just")
-                 (lambda _ (invoke just "--completions" "elvish")))))))))
+       #~(modify-phases %standard-phases
+           (add-after 'unpack 'replace-hardcoded-paths
+             (lambda* (#:key inputs #:allow-other-keys)
+               (substitute* (cons "src/justfile.rs"
+                                  (find-files "tests/" "\\.rs$"))
+                 (("/bin/sh")
+                  (search-input-file inputs "/bin/sh"))
+                 (("/usr/bin/env sh")
+                  (search-input-file inputs "/bin/sh"))
+                 (("/usr/bin/env")
+                  (search-input-file inputs "/bin/env"))
+                 (("/bin/echo")
+                  (search-input-file inputs "/bin/echo")))))
+           (add-after 'install 'install-extras
+             (lambda* (#:key outputs #:allow-other-keys)
+               (let* ((out (assoc-ref outputs "out"))
+                      (share (string-append out "/share"))
+                      (man1 (string-append share "/man/man1"))
+                      (bash-completions-dir
+                       (string-append share "/bash-completion/completions"))
+                      (zsh-completions-dir
+                       (string-append share "/zsh/site-functions"))
+                      (fish-completions-dir
+                       (string-append share "/fish/vendor_completions.d"))
+                      (elvish-completions-dir
+                       (string-append share "/elvish/lib"))
+                      (just (string-append out "/bin/just")))
+                 (install-file "man/just.1" man1)
+                 (mkdir-p bash-completions-dir)
+                 (with-output-to-file
+                     (string-append bash-completions-dir "/just")
+                   (lambda _ (invoke just "--completions" "bash")))
+                 (mkdir-p zsh-completions-dir)
+                 (with-output-to-file
+                     (string-append zsh-completions-dir "/_just")
+                   (lambda _ (invoke just "--completions" "zsh")))
+                 (mkdir-p fish-completions-dir)
+                 (with-output-to-file
+                     (string-append fish-completions-dir "/just.fish")
+                   (lambda _ (invoke just "--completions" "fish")))
+                 (mkdir-p elvish-completions-dir)
+                 (with-output-to-file
+                     (string-append elvish-completions-dir "/just")
+                   (lambda _ (invoke just "--completions" "elvish")))))))))
+    (native-inputs  (if (%current-target-system)
+                        (list this-package)
+                        '()))
     (inputs (list bash-minimal coreutils-minimal))
     (home-page "https://github.com/casey/just")
     (synopsis "Just a command runner")
