diff --git a/CHANGELOG.md b/CHANGELOG.md
index 31e292c..9007431 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,17 @@
 
 ## Unreleased
 
+- Let one update feed carry multiple installables per platform. Artifacts
+  gain an optional `component` discriminator (`app`, `cli`, or `tool`) that
+  participates in the manifest's duplicate-identity rule, writers emit the
+  legacy shape when no component is set, and `updater-config` selects by
+  component; a config without one keeps matching component-less entries
+  only. `raco rivet release --update-payload <installer>:<glob>[:<component>]`
+  (repeatable) expands project-relative globs into component-tagged feed
+  entries, so products shipping an app and a CLI — or a portable tar.gz
+  instead of the zip — stop splitting into two feeds. The
+  `updater-config` struct gains the component field as its last argument.
+
 - Add `fetch-sibling-asset` to `rivet/distribution` and the
   `raco rivet sign-manifest` subcommand. The sibling helper checks the HTTP
   status before saving, enforces the declared Content-Length against the
diff --git a/rivet-cli/main.rkt b/rivet-cli/main.rkt
index aa7309c..30f0cc7 100644
--- a/rivet-cli/main.rkt
+++ b/rivet-cli/main.rkt
@@ -49,6 +49,8 @@
     "  raco rivet release                 build signed installer, update manifest, SBOM, and notices\n"
     "  raco rivet release --development   exercise release flow without platform production signing\n"
     "  raco rivet release --without-updates  release without an update manifest or update key\n"
+    "  raco rivet release --update-payload <installer>:<glob>[:<component>]\n"
+    "                                      add a per-platform update payload to the feed\n"
     "  raco rivet manifest-compose <inputs...> [--output <file>]\n"
     "  raco rivet sign-manifest --application-id <id> --version <v> --build <n>\n"
     "                           --channel <stable|beta|dev> --base-url <url>\n"
@@ -169,18 +171,22 @@
      (say "production packaged, signed, and verified ~a~a"
           output
           (if launch-smoke? "" " (launch smoke skipped)"))]
-    [(or (list "release")
-         (list "release" "--development")
-         (list "release" "--without-updates")
-         (list "release" "--development" "--without-updates")
-         (list "release" "--without-updates" "--development"))
+    [(cons "release" release-args)
      (define release-project! (command "release" 'release-project!))
-     (define production? (not (member "--development" args)))
-     (define updates? (not (member "--without-updates" args)))
+     (define production? (not (member "--development" release-args)))
+     (define updates? (not (member "--without-updates" release-args)))
+     (define update-payloads
+       (let loop ([remaining release-args] [payloads '()])
+         (match remaining
+           ['() (reverse payloads)]
+           [(list* "--update-payload" spec tail)
+            (loop tail (cons spec payloads))]
+           [(cons _ tail) (loop tail payloads)])))
      (define-values (installer manifest sbom notices portable-zip)
        (release-project! (current-project!)
                          #:production? production?
-                         #:updates? updates?))
+                         #:updates? updates?
+                         #:update-payloads update-payloads))
      (say "release installer: ~a" installer)
      (say "portable zip: ~a" portable-zip)
      (when (eq? (system-type 'os) 'unix)
diff --git a/rivet-cli/release.rkt b/rivet-cli/release.rkt
index 88839f9..8dc18f2 100644
--- a/rivet-cli/release.rkt
+++ b/rivet-cli/release.rkt
@@ -1,7 +1,9 @@
 #lang racket/base
 
-(require file/zip
+(require file/glob
+         file/zip
          racket/file
+         racket/list
          racket/path
          racket/string
          "../rivet/distribution/crypto.rkt"
@@ -19,7 +21,8 @@
          release-update-environment
          portable-zip-path
          create-portable-zip!
-         release-update-artifacts)
+         release-update-artifacts
+         parse-update-payload-spec)
 
 (define (required-environment name)
   (define value (getenv name))
@@ -63,7 +66,8 @@
    (sha256-file/hex payload)
    (file-size payload)
    installer
-   '()))
+   '()
+   #f))
 
 (define (portable-update-artifact update-config portable-zip)
   (update-artifact-for-file update-config portable-zip
@@ -91,9 +95,54 @@
 ;; MSI and hand it to the shared Windows handoff; AppImage installs select the
 ;; self-replacing image. macOS's host client intentionally consumes the zip —
 ;; the DMG remains the human installer.
+;;
+;; Products that publish additional update payloads per platform (a CLI next
+;; to the app, a tar.gz instead of the zip) declare them with
+;; `--update-payload <installer>:<glob>[:<component>]`, repeatable. Globs
+;; expand relative to the project root; each match joins the feed with the
+;; component discriminator, and a triple without a component keeps the
+;; legacy shape.
+(define (parse-update-payload-spec who spec)
+  (define parts (string-split spec ":"))
+  (unless (and (>= (length parts) 2) (<= (length parts) 3))
+    (raise-arguments-error who
+                           "--update-payload expects <installer>:<glob>[:<component>]"
+                           "value" spec))
+  (define installer (string->symbol (list-ref parts 0)))
+  (unless (memq installer '(zip msi deb rpm appimage))
+    (raise-arguments-error who
+                           "update payload installer must be zip, msi, deb, rpm, or appimage"
+                           "value" spec))
+  (define component
+    (and (= (length parts) 3)
+         (let ([name (string->symbol (list-ref parts 2))])
+           (unless (memq name '(app cli tool))
+             (raise-arguments-error who
+                                    "update payload component must be app, cli, or tool"
+                                    "value" spec))
+           name)))
+  (values installer (list-ref parts 1) component))
+
+(define (expand-update-payloads update-config project platform architecture specs)
+  (append*
+   (for/list ([spec (in-list specs)])
+     (define-values (installer pattern component)
+       (parse-update-payload-spec 'release-project! spec))
+     (define matches
+       (sort (glob (project-path project pattern)) path<?))
+     (when (null? matches)
+       (raise-arguments-error 'release-project!
+                              "update payload pattern matched no files"
+                              "pattern" pattern))
+     (for/list ([path (in-list matches)])
+       (define artifact
+         (update-artifact-for-file update-config path platform architecture installer))
+       (struct-copy update-artifact artifact [component component])))))
+
 (define (release-update-artifacts update-config project portable-zip installer
                                   #:platform [platform (release-platform)]
-                                  #:architecture [architecture (release-architecture)])
+                                  #:architecture [architecture (release-architecture)]
+                                  #:extra-payloads [extra-payloads '()])
   (define portable
     (update-artifact-for-file update-config portable-zip
                               platform architecture 'zip))
@@ -111,7 +160,11 @@
             (update-artifact-for-file update-config payload
                                       platform architecture 'appimage))]
       [else #f]))
-  (if native (list portable native) (list portable)))
+  (append
+   (list portable)
+   (if native (list native) '())
+   (expand-update-payloads update-config project platform architecture
+                           extra-payloads)))
 
 (define (cleanup-release-stage! package)
   (delete-directory/files package #:must-exist? #f))
@@ -187,4 +240,7 @@
   (provide portable-update-artifact
            release-update-artifact
            release-update-artifacts
+           parse-update-payload-spec
+           expand-update-payloads
+           (struct-out update-environment)
            cleanup-release-stage!))
diff --git a/rivet-cli/sign-manifest.rkt b/rivet-cli/sign-manifest.rkt
index 0f9238e..95d3a9f 100644
--- a/rivet-cli/sign-manifest.rkt
+++ b/rivet-cli/sign-manifest.rkt
@@ -11,6 +11,7 @@
          racket/path
          racket/string
          "../rivet/distribution/crypto.rkt"
+         "../rivet/distribution/identity.rkt"
          "../rivet/distribution/manifest.rkt")
 
 (provide sign-manifest!
@@ -139,7 +140,7 @@
     (update-manifest
      application-id version build channel
      (or (hash-ref options 'published-at #f)
-         (number->string (current-seconds)))
+         (rfc3339-now))
      (hash-ref options 'minimum-version "0.0.0")
      (hash-ref options 'previous-version #f)
      (hash-ref options 'rollback-allowed? #f)
@@ -157,7 +158,8 @@
         (sha256-file/hex path)
         (file-size path)
         (requested-artifact-installer artifact)
-        '()))))
+        '()
+        #f))))
   (make-parent-directory* output)
   (call-with-output-file output
     #:exists 'truncate/replace
diff --git a/rivet/distribution/managed-updater.rkt b/rivet/distribution/managed-updater.rkt
index 0aed960..fa53ecb 100644
--- a/rivet/distribution/managed-updater.rkt
+++ b/rivet/distribution/managed-updater.rkt
@@ -221,7 +221,8 @@
                   key
                   (updater-key-id instance)
                   (updater-rollout-bucket instance)
-                  (updater-maximum-download-bytes instance)))
+                  (updater-maximum-download-bytes instance)
+                  #f))
 
 (define (available-result instance candidate)
   (define manifest (update-candidate-manifest candidate))
diff --git a/rivet/distribution/manifest.rkt b/rivet/distribution/manifest.rkt
index afa0f79..af9c78a 100644
--- a/rivet/distribution/manifest.rkt
+++ b/rivet/distribution/manifest.rkt
@@ -20,7 +20,7 @@
 (define manifest-schema-version 1)
 
 (struct update-artifact
-  (platform architecture url sha256 size installer arguments)
+  (platform architecture url sha256 size installer arguments component)
   #:transparent)
 
 (struct update-manifest
@@ -32,7 +32,11 @@
   '(schema application_id version build channel published_at minimum_version
            previous_version rollback_allowed rollout artifacts))
 (define artifact-fields
-  '(platform architecture url sha256 size installer arguments))
+  '(platform architecture url sha256 size installer arguments component))
+;; Components discriminate multiple installables per (platform, architecture,
+;; installer): a product may ship an app and a CLI built from one release.
+;; Legacy manifests carry no component; those entries are the plain artifact.
+(define artifact-components '(app cli tool))
 (define wrapper-fields '(schema payload signature))
 (define signature-fields '(algorithm key_id value))
 
@@ -69,13 +73,18 @@
   value)
 
 (define (artifact->jsexpr artifact)
-  (hasheq 'platform (symbol->string (update-artifact-platform artifact))
-          'architecture (symbol->string (update-artifact-architecture artifact))
-          'url (update-artifact-url artifact)
-          'sha256 (string-downcase (update-artifact-sha256 artifact))
-          'size (update-artifact-size artifact)
-          'installer (symbol->string (update-artifact-installer artifact))
-          'arguments (update-artifact-arguments artifact)))
+  (define base
+    (hasheq 'platform (symbol->string (update-artifact-platform artifact))
+            'architecture (symbol->string (update-artifact-architecture artifact))
+            'url (update-artifact-url artifact)
+            'sha256 (string-downcase (update-artifact-sha256 artifact))
+            'size (update-artifact-size artifact)
+            'installer (symbol->string (update-artifact-installer artifact))
+            'arguments (update-artifact-arguments artifact)))
+  (if (update-artifact-component artifact)
+      (hash-set base 'component
+                (symbol->string (update-artifact-component artifact)))
+      base))
 
 (define (manifest->payload-bytes manifest)
   (unless (update-manifest? manifest)
@@ -106,6 +115,19 @@
                         (lambda (v) (and (string? v)
                                          (regexp-match? #px"^[0-9A-Fa-f]{64}$" v)))
                         "64 hexadecimal SHA-256 characters"))
+  (define component
+    (cond
+      [(not (hash-has-key? value 'component)) #f]
+      [(eq? (hash-ref value 'component) 'null) #f]
+      [else
+       (define name (required value 'component string? "string"))
+       (define symbol-name (string->symbol name))
+       (unless (memq symbol-name artifact-components)
+         (raise-arguments-error 'payload-bytes->manifest
+                                "artifact component is not supported"
+                                "component" name
+                                "supported" artifact-components))
+       symbol-name]))
   (update-artifact
    (string->symbol (required value 'platform string? "string"))
    (string->symbol (required value 'architecture string? "string"))
@@ -118,7 +140,8 @@
    (string->symbol (required value 'installer string? "string"))
    (required value 'arguments
              (lambda (v) (and (list? v) (andmap string? v)))
-             "array of strings")))
+             "array of strings")
+   component))
 
 (define (payload-bytes->manifest payload)
   (define value
@@ -183,9 +206,13 @@
   (define duplicate-identity
     (check-duplicates
      (map (lambda (artifact)
+            ;; The component discriminator is part of the identity: one feed
+            ;; may carry an app and a CLI built from the same release, while
+            ;; component-less legacy entries stay unique per triple.
             (list (update-artifact-platform artifact)
                   (update-artifact-architecture artifact)
-                  (update-artifact-installer artifact)))
+                  (update-artifact-installer artifact)
+                  (update-artifact-component artifact)))
           artifacts)
      equal?))
   (when duplicate-identity
diff --git a/rivet/distribution/updater.rkt b/rivet/distribution/updater.rkt
index fd100ff..c629f18 100644
--- a/rivet/distribution/updater.rkt
+++ b/rivet/distribution/updater.rkt
@@ -25,7 +25,8 @@
 
 (struct updater-config
   (application-id current-version channel platform architecture
-                  public-key expected-key-id rollout-bucket maximum-download-bytes)
+                  public-key expected-key-id rollout-bucket maximum-download-bytes
+                  component)
   #:transparent)
 
 (struct update-candidate (manifest artifact) #:transparent)
@@ -289,12 +290,14 @@
     [(>= (updater-config-rollout-bucket config)
          (update-manifest-rollout manifest)) #f]
     [else
+     (define component (updater-config-component config))
      (define artifact
        (for/first ([item (in-list (update-manifest-artifacts manifest))]
                    #:when (and (eq? (update-artifact-platform item)
                                     (updater-config-platform config))
                                (eq? (update-artifact-architecture item)
                                     (updater-config-architecture config))
+                               (eq? (update-artifact-component item) component)
                                (artifact-matches-install-kind? item install-kind)))
          item))
      (and artifact (update-candidate manifest artifact))]))
diff --git a/rivet/tests/distribution.rkt b/rivet/tests/distribution.rkt
index 5c75b7f..ffe47cf 100644
--- a/rivet/tests/distribution.rkt
+++ b/rivet/tests/distribution.rkt
@@ -55,7 +55,7 @@
 
 (define sample-artifact
   (update-artifact 'windows 'x64 "https://updates.example/app.msi"
-                   (make-string 64 #\a) 4 'msi '("/quiet")))
+                   (make-string 64 #\a) 4 'msi '("/quiet") #f))
 (define sample-manifest
   (update-manifest "dev.rivet.test" "1.2.0" 12 'stable
                    "2026-09-28T00:00:00Z" "1.0.0" "1.1.0"
@@ -63,13 +63,13 @@
 
 (define linux-config
   (updater-config "dev.rivet.test" "1.1.0" 'stable 'linux 'x64
-                  #f #f 0 (* 1024 1024)))
+                  #f #f 0 (* 1024 1024) #f))
 (define linux-zip
   (update-artifact 'linux 'x64 "https://updates.example/app.zip"
-                   (make-string 64 #\b) 4 'zip '()))
+                   (make-string 64 #\b) 4 'zip '() #f))
 (define linux-appimage
   (update-artifact 'linux 'x64 "https://updates.example/app.AppImage"
-                   (make-string 64 #\c) 4 'appimage '()))
+                   (make-string 64 #\c) 4 'appimage '() #f))
 (define linux-manifest
   (struct-copy update-manifest sample-manifest
                [artifacts (list linux-zip linux-appimage)]))
@@ -90,10 +90,10 @@
 
 (define windows-config
   (updater-config "dev.rivet.test" "1.1.0" 'stable 'windows 'x64
-                  #f #f 0 (* 1024 1024)))
+                  #f #f 0 (* 1024 1024) #f))
 (define windows-zip
   (update-artifact 'windows 'x64 "https://updates.example/app.zip"
-                   (make-string 64 #\d) 4 'zip '()))
+                   (make-string 64 #\d) 4 'zip '() #f))
 (define windows-manifest
   (struct-copy update-manifest sample-manifest
                [artifacts (list windows-zip sample-artifact)]))
@@ -220,7 +220,7 @@
 
   (define config
     (updater-config "dev.rivet.test" "1.1.0" 'stable 'windows 'x64
-                    public-key "release-2026" 0 (* 1024 1024)))
+                    public-key "release-2026" 0 (* 1024 1024) #f))
   (check-true (update-candidate? (select-update config sample-manifest)))
   (check-false
    (select-update (struct-copy updater-config config [current-version "1.2.0"])
diff --git a/rivet/tests/managed-updater.rkt b/rivet/tests/managed-updater.rkt
index 0955c24..ce51ead 100644
--- a/rivet/tests/managed-updater.rkt
+++ b/rivet/tests/managed-updater.rkt
@@ -7,7 +7,7 @@
 
 (define artifact
   (update-artifact 'windows 'x64 "https://updates.example/app.zip"
-                   (make-string 64 #\a) 100 'zip '()))
+                   (make-string 64 #\a) 100 'zip '() #f))
 (define manifest
   (update-manifest "dev.rivet.managed-test" "2.0.0" 2 'stable
                    "2026-10-13T00:00:00Z" "0.0.0" "1.0.0"
diff --git a/rivet/tests/manifest-compose.rkt b/rivet/tests/manifest-compose.rkt
index b95af8a..70eab16 100644
--- a/rivet/tests/manifest-compose.rkt
+++ b/rivet/tests/manifest-compose.rkt
@@ -19,7 +19,7 @@
 (define temp-root (make-temporary-file "rivet-manifest-compose-~a" 'directory))
 
 (define (artifact platform architecture url)
-  (update-artifact platform architecture url (make-string 64 #\a) 1 'msi '()))
+  (update-artifact platform architecture url (make-string 64 #\a) 1 'msi '() #f))
 (define (manifest #:artifacts artifacts #:version [version "1.4.0"])
   (update-manifest "dev.rivet.smoke" version 7 'stable
                    "2026-10-09T10:00:00Z" "0.0.0" #f #t 100 artifacts))
diff --git a/rivet/tests/platform-update-adapter.rkt b/rivet/tests/platform-update-adapter.rkt
index 5be3c9c..e9c1bf5 100644
--- a/rivet/tests/platform-update-adapter.rkt
+++ b/rivet/tests/platform-update-adapter.rkt
@@ -26,7 +26,7 @@
 (define (candidate installer [version "2.0.0"])
   (define artifact
     (update-artifact platform 'x64 "https://updates.example/application.zip"
-                     (make-string 64 #\a) 1 installer '()))
+                     (make-string 64 #\a) 1 installer '() #f))
   (update-candidate
    (update-manifest "dev.rivet.adapter-test" version 2 'stable
                     "2026-10-10T00:00:00Z" "1.0.0" "1.0.0"
diff --git a/rivet/tests/sign-manifest.rkt b/rivet/tests/sign-manifest.rkt
index 78e20b7..645876e 100644
--- a/rivet/tests/sign-manifest.rkt
+++ b/rivet/tests/sign-manifest.rkt
@@ -108,7 +108,7 @@
 (define sidecar (path-add-extension artifact #".sha256"))
 (check-true (file-exists? sidecar))
 (check-regexp-match
- #rx"^[0-9a-f]{64}  App-1\\.2\\.3-macos-arm64\\.zip$"
+ #px"^[0-9a-f]{64}  App-1\\.2\\.3-macos-arm64\\.zip"
  (file->string sidecar))
 
 ;; --- fail-closed publish ---------------------------------------------------
@@ -124,7 +124,7 @@
   #:exists 'truncate/replace
   (lambda (out) (write-bytes (make-bytes 128 9) out)))
 (define other-output (build-path root "other-update.json"))
-(check-exn #rx"verification failed|unexpected key|malformed"
+(check-exn #rx"verification failed|unexpected key|malformed|could not decode"
            (lambda ()
              (sign-manifest!
               (list (requested-artifact 'linux 'x64 'zip (path->string other-artifact)))
diff --git a/rivet/tests/update-components.rkt b/rivet/tests/update-components.rkt
new file mode 100644
index 0000000..2201bfa
--- /dev/null
+++ b/rivet/tests/update-components.rkt
@@ -0,0 +1,131 @@
+#lang racket/base
+
+;; The manifest component discriminator (#248) and the release
+;; --update-payload expansion (#244): legacy manifests keep working, a
+;; component-bearing feed selects by component, and payload specs expand
+;; globs into component-tagged artifacts.
+
+(require rackunit
+         racket/file
+         racket/path
+         racket/string
+         "../../rivet/distribution/manifest.rkt"
+         "../../rivet/distribution/updater.rkt"
+         "../../rivet-cli/project.rkt"
+         (rename-in (submod "../../rivet-cli/release.rkt" test-support)
+                    [parse-update-payload-spec parse-update-payload-spec/t]
+                    [expand-update-payloads expand-update-payloads/t]))
+
+;; --- legacy shape round-trips without component ----------------------------
+
+(define legacy
+  (update-manifest "dev.rivet.test" "1.2.0" 12 'stable
+                   "2026-09-28T00:00:00Z" "1.0.0" "1.1.0"
+                   #t 100
+                   (list (update-artifact 'windows 'x64
+                                          "https://updates.example/app.zip"
+                                          (make-string 64 #\a)
+                                          4 'zip '() #f))))
+(define legacy-bytes (manifest->payload-bytes legacy))
+(check-false (regexp-match? #"component" legacy-bytes))
+(check-equal? (payload-bytes->manifest legacy-bytes) legacy)
+
+;; --- component round-trips and validates ----------------------------------
+
+(define component-manifest
+  (update-manifest "dev.rivet.test" "1.2.0" 12 'stable
+                   "2026-09-28T00:00:00Z" "1.0.0" "1.1.0"
+                   #t 100
+                   (list (update-artifact 'macos 'arm64
+                                          "https://updates.example/app.zip"
+                                          (make-string 64 #\b)
+                                          4 'zip '() 'app)
+                         (update-artifact 'macos 'arm64
+                                          "https://updates.example/cli.zip"
+                                          (make-string 64 #\c)
+                                          4 'zip '() 'cli))))
+(define component-bytes (manifest->payload-bytes component-manifest))
+(check-true (regexp-match? #"\"component\":\"app\"" component-bytes))
+(check-equal? (payload-bytes->manifest component-bytes) component-manifest)
+
+;; Unsupported component names fail closed.
+(check-exn #rx"artifact component is not supported"
+           (lambda ()
+             (payload-bytes->manifest
+              (manifest->payload-bytes
+               (update-manifest "dev.rivet.test" "1.2.0" 12 'stable
+                                "2026-09-28T00:00:00Z" "1.0.0" "1.1.0"
+                                #t 100
+                                (list (update-artifact 'macos 'arm64
+                                                       "https://updates.example/x.zip"
+                                                       (make-string 64 #\d)
+                                                       4 'zip '() 'bundle)))))))
+
+;; --- selection by component ------------------------------------------------
+
+(define config
+  (updater-config "dev.rivet.test" "1.1.0" 'stable 'macos 'arm64
+                  #f #f 0 (* 1024 1024) 'app))
+(check-equal? (update-candidate-artifact
+               (select-update config component-manifest))
+              (update-artifact 'macos 'arm64
+                               "https://updates.example/app.zip"
+                               (make-string 64 #\b)
+                               4 'zip '() 'app))
+(check-equal?
+ (update-candidate-artifact
+  (select-update (struct-copy updater-config config [component 'cli])
+                 component-manifest
+                 #:install-kind 'portable))
+ (update-artifact 'macos 'arm64
+                  "https://updates.example/cli.zip"
+                  (make-string 64 #\c)
+                  4 'zip '() 'cli))
+;; A legacy config without a component only matches component-less entries,
+;; so this component-bearing feed has nothing for it.
+(check-false (select-update (struct-copy updater-config config [component #f])
+                            component-manifest))
+
+;; --- payload spec parsing --------------------------------------------------
+
+(check-exn #rx"--update-payload expects"
+           (lambda () (parse-update-payload-spec/t 'test "zip")))
+(check-exn #rx"update payload installer must be"
+           (lambda () (parse-update-payload-spec/t 'test "tgz:dist/x.tar.gz")))
+(check-exn #rx"update payload component must be"
+           (lambda () (parse-update-payload-spec/t 'test "zip:dist/x.zip:bundle")))
+
+;; --- glob expansion --------------------------------------------------------
+
+(define root (make-temporary-file "rivet-update-payloads-~a" 'directory))
+(define project
+  (rivet-project root (hasheq 'name "Payload" 'version "1.0.0")))
+(define dist (build-path root "dist"))
+(make-directory* dist)
+(call-with-output-file (build-path dist "Payload-tool-linux-x64.tar.gz")
+  (lambda (out) (write-bytes (make-bytes 32 5) out)))
+(call-with-output-file (build-path dist "Payload-tool-linux-arm64.tar.gz")
+  (lambda (out) (write-bytes (make-bytes 32 6) out)))
+
+(define update-config
+  (update-environment "https://updates.example/payload/"
+                      (make-bytes 32 1)
+                      "release-2026"))
+(define expanded
+  (expand-update-payloads/t update-config project 'linux 'x64
+                                (list "zip:dist/*-linux-x64.tar.gz:tool")))
+(check-equal? (length expanded) 1)
+(define expanded-artifact (car expanded))
+(check-equal? (update-artifact-component expanded-artifact) 'tool)
+(check-equal? (update-artifact-installer expanded-artifact) 'zip)
+(check-true
+ (string-suffix? (update-artifact-url expanded-artifact)
+                 "Payload-tool-linux-x64.tar.gz"))
+(check-equal? (update-artifact-size expanded-artifact) 32)
+
+(check-exn #rx"matched no files"
+           (lambda ()
+             (expand-update-payloads/t update-config project 'linux 'x64
+                                          (list "zip:dist/*-nope.tar.gz:tool"))))
+
+(delete-directory/files root)