diff --git a/pkg/cmd/extension/command.go b/pkg/cmd/extension/command.go
index f83637681..8153ef5e4 100644
--- a/pkg/cmd/extension/command.go
+++ b/pkg/cmd/extension/command.go
@@ -247,12 +247,8 @@ func checkValidExtension(rootCmd *cobra.Command, m extensions.ExtensionManager,
 }
 
 func isBinExtension(client *http.Client, repo ghrepo.Interface) (isBin bool, err error) {
-	hs, err := hasScript(client, repo)
-	if err != nil || hs {
-		return
-	}
-
-	_, err = fetchLatestRelease(client, repo)
+	var r *release
+	r, err = fetchLatestRelease(client, repo)
 	if err != nil {
 		httpErr, ok := err.(api.HTTPError)
 		if ok && httpErr.StatusCode == 404 {
@@ -262,7 +258,16 @@ func isBinExtension(client *http.Client, repo ghrepo.Interface) (isBin bool, err
 		return
 	}
 
-	isBin = true
+	for _, a := range r.Assets {
+		dists := possibleDists()
+		for _, d := range dists {
+			if strings.HasSuffix(a.Name, d) {
+				isBin = true
+				break
+			}
+		}
+	}
+
 	return
 }
 
@@ -272,3 +277,52 @@ func normalizeExtensionSelector(n string) string {
 	}
 	return strings.TrimPrefix(n, "gh-")
 }
+
+func possibleDists() []string {
+	return []string{
+		"aix-ppc64",
+		"android-386",
+		"android-amd64",
+		"android-arm",
+		"android-arm64",
+		"darwin-amd64",
+		"darwin-arm64",
+		"dragonfly-amd64",
+		"freebsd-386",
+		"freebsd-amd64",
+		"freebsd-arm",
+		"freebsd-arm64",
+		"illumos-amd64",
+		"ios-amd64",
+		"ios-arm64",
+		"js-wasm",
+		"linux-386",
+		"linux-amd64",
+		"linux-arm",
+		"linux-arm64",
+		"linux-mips",
+		"linux-mips64",
+		"linux-mips64le",
+		"linux-mipsle",
+		"linux-ppc64",
+		"linux-ppc64le",
+		"linux-riscv64",
+		"linux-s390x",
+		"netbsd-386",
+		"netbsd-amd64",
+		"netbsd-arm",
+		"netbsd-arm64",
+		"openbsd-386",
+		"openbsd-amd64",
+		"openbsd-arm",
+		"openbsd-arm64",
+		"openbsd-mips64",
+		"plan9-386",
+		"plan9-amd64",
+		"plan9-arm",
+		"solaris-amd64",
+		"windows-386",
+		"windows-amd64",
+		"windows-arm",
+	}
+}
diff --git a/pkg/cmd/extension/command_test.go b/pkg/cmd/extension/command_test.go
index 635fcba17..8c54b24da 100644
--- a/pkg/cmd/extension/command_test.go
+++ b/pkg/cmd/extension/command_test.go
@@ -40,6 +40,9 @@ func TestNewCmdExtension(t *testing.T) {
 			name: "install a git extension",
 			args: []string{"install", "owner/gh-some-ext"},
 			httpStubs: func(reg *httpmock.Registry) {
+				reg.Register(
+					httpmock.REST("GET", "repos/owner/gh-some-ext/releases/latest"),
+					httpmock.StatusStringResponse(404, "nope"))
 				reg.Register(
 					httpmock.REST("GET", "repos/owner/gh-some-ext/contents/gh-some-ext"),
 					httpmock.StringResponse("a script"))
@@ -64,12 +67,11 @@ func TestNewCmdExtension(t *testing.T) {
 			name: "install a binary extension",
 			args: []string{"install", "owner/gh-bin-ext"},
 			httpStubs: func(reg *httpmock.Registry) {
-				reg.Register(
-					httpmock.REST("GET", "repos/owner/gh-bin-ext/contents/gh-bin-ext"),
-					httpmock.StatusStringResponse(404, "no"))
 				reg.Register(
 					httpmock.REST("GET", "repos/owner/gh-bin-ext/releases/latest"),
-					httpmock.StringResponse("{}"))
+					httpmock.JSONResponse(release{
+						Assets: []releaseAsset{
+							{Name: "gh-foo-windows-amd64"}}}))
 			},
 			managerStubs: func(em *extensions.ExtensionManagerMock) func(*testing.T) {
 				em.ListFunc = func(bool) []extensions.Extension {