diff --git a/src/Roots/Acorn/Application/Concerns/Bootable.php b/src/Roots/Acorn/Application/Concerns/Bootable.php
index c5283673..f1b29bb4 100644
--- a/src/Roots/Acorn/Application/Concerns/Bootable.php
+++ b/src/Roots/Acorn/Application/Concerns/Bootable.php
@@ -154,10 +154,6 @@ protected function registerWordPressRoute(): void
                 $response->header($header, $value, $header !== 'Set-Cookie');
             }
 
-            if ($this->hasDebugModeEnabled()) {
-                $response->header('X-Powered-By', $this->version());
-            }
-
             $response->setStatusCode(http_response_code());
 
             $content = '';
diff --git a/src/Roots/Acorn/Providers/AcornServiceProvider.php b/src/Roots/Acorn/Providers/AcornServiceProvider.php
index 36d6034d..314772ac 100644
--- a/src/Roots/Acorn/Providers/AcornServiceProvider.php
+++ b/src/Roots/Acorn/Providers/AcornServiceProvider.php
@@ -56,6 +56,28 @@ public function boot()
             $this->registerPublishables();
             $this->registerPostInitEvent();
         }
+
+        $this->poweredBy();
+    }
+
+    /**
+     * Add a header.
+     *
+     * Disable with `add_filter('acorn/powered_by', '__return_false');`
+     *
+     * @return void
+     */
+    protected function poweredBy()
+    {
+        add_filter('wp_headers', function ($headers) {
+            if (! apply_filters('acorn/powered_by', true)) {
+                return $headers;
+            }
+
+            $headers['X-Powered-By'] = $this->app->version();
+
+            return $headers;
+        });
     }
 
     /**