diff --git a/projects/packages/jetpack-mu-wpcom/changelog/enable-classic-block-inserter-support b/projects/packages/jetpack-mu-wpcom/changelog/enable-classic-block-inserter-support
new file mode 100644
index 000000000000..c590b8b3f01a
--- /dev/null
+++ b/projects/packages/jetpack-mu-wpcom/changelog/enable-classic-block-inserter-support
@@ -0,0 +1,4 @@
+Significance: minor
+Type: added
+
+Classic block: Allow sites with the enable-classic-block-inserter-support sticker to insert the Classic block.
diff --git a/projects/packages/jetpack-mu-wpcom/src/class-jetpack-mu-wpcom.php b/projects/packages/jetpack-mu-wpcom/src/class-jetpack-mu-wpcom.php
index e362aa5efbd2..1af64f2e02b9 100644
--- a/projects/packages/jetpack-mu-wpcom/src/class-jetpack-mu-wpcom.php
+++ b/projects/packages/jetpack-mu-wpcom/src/class-jetpack-mu-wpcom.php
@@ -91,6 +91,11 @@ public static function init() {
 		// Filter to populate JetpackScriptData.site.wpcom.blog_id with the actual WP.com blog ID.
 		add_filter( 'jetpack_admin_js_script_data', array( __CLASS__, 'set_wpcom_blog_id_script_data' ), 10, 1 );
 
+		// Allow sites with the `classic-block-inserter-support` blog sticker to insert the Classic block.
+		if ( wpcom_has_blog_sticker( 'classic-block-inserter-support', get_wpcom_blog_id() ) ) {
+			add_filter( 'wp_classic_block_supports_inserter', '__return_true' );
+		}
+
 		/**
 		 * Runs right after the Jetpack_Mu_Wpcom package is initialized.
 		 *