diff --git a/README.md b/README.md
index b5f62e7..1693fac 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ On project creation, when Caddy routing is enabled, the app appends a route to:
 Route shape:
 - `match.host = [<project host>]`
 - `handle[0].handler = reverse_proxy`
-- `handle[0].upstreams[0].dial = 127.0.0.1:<target_port>`
+- `handle[0].upstreams[0].dial = unix/<unix-user-home>/projects/<app>/app.sock`
 
 ## Workspaces and Unix Users
 
diff --git a/internal/app/integrations.go b/internal/app/integrations.go
index 8adb56d..e0f6d12 100644
--- a/internal/app/integrations.go
+++ b/internal/app/integrations.go
@@ -8,6 +8,7 @@ import (
 	"io"
 	"net/http"
 	"net/url"
+	"path/filepath"
 	"strings"
 )
 
@@ -56,10 +57,15 @@ func (a *App) ensureCaddyRoute(ctx context.Context, p Project) error {
 	if !a.cfg.CaddyRouteEnabled {
 		return nil
 	}
+	projectDir, err := a.projectDirFor(p)
+	if err != nil {
+		return err
+	}
+	socketPath := filepath.Join(projectDir, "app.sock")
 	route := map[string]any{
 		"@id":    "project-route-" + p.UserID + "-" + p.Slug,
 		"match":  []any{map[string]any{"host": []string{p.RouteHost}}},
-		"handle": []any{map[string]any{"handler": "reverse_proxy", "upstreams": []any{map[string]any{"dial": fmt.Sprintf("127.0.0.1:%d", p.TargetPort)}}}},
+		"handle": []any{map[string]any{"handler": "reverse_proxy", "upstreams": []any{map[string]any{"dial": "unix/" + socketPath}}}},
 	}
 	body, _ := json.Marshal(route)
 	url := fmt.Sprintf("%s/config/apps/http/servers/%s/routes", a.cfg.CaddyAdminURL, a.cfg.CaddyServerID)