diff --git a/projects/plugins/jetpack/changelog/update-floating-subscribe-button-source b/projects/plugins/jetpack/changelog/update-floating-subscribe-button-source
new file mode 100644
index 0000000000000..c31ed74d6a395
--- /dev/null
+++ b/projects/plugins/jetpack/changelog/update-floating-subscribe-button-source
@@ -0,0 +1,4 @@
+Significance: minor
+Type: other
+
+Floating subscribe button: add source attribute for stats
diff --git a/projects/plugins/jetpack/modules/subscriptions/subscribe-floating-button/class-jetpack-subscribe-floating-button.php b/projects/plugins/jetpack/modules/subscriptions/subscribe-floating-button/class-jetpack-subscribe-floating-button.php
index 8fa9792886c7d..09bb8ec5de85a 100644
--- a/projects/plugins/jetpack/modules/subscriptions/subscribe-floating-button/class-jetpack-subscribe-floating-button.php
+++ b/projects/plugins/jetpack/modules/subscriptions/subscribe-floating-button/class-jetpack-subscribe-floating-button.php
@@ -111,7 +111,7 @@ public function get_template() {
 	public function get_floating_subscribe_button_template_content() {
 		$block_name = esc_attr__( 'Floating subscribe button', 'jetpack' );
 
-		return '<!-- wp:jetpack/subscriptions {"className":"is-style-button","lock":{"move":false,"remove":true},"style":{"spacing":{"margin":{"right":"20px","left":"20px","top":"20px","bottom":"20px"}}},"metadata":{"name":"' . $block_name . '"}} /-->';
+		return '<!-- wp:jetpack/subscriptions {"className":"is-style-button","appSource":"subscribe-floating-button","lock":{"move":false,"remove":true},"style":{"spacing":{"margin":{"right":"20px","left":"20px","top":"20px","bottom":"20px"}}},"metadata":{"name":"' . $block_name . '"}} /-->';
 	}
 
 	/**