diff --git a/includes/class-coblocks-block-assets.php b/includes/class-coblocks-block-assets.php
index eef7f0e5fe6..67801181c02 100644
--- a/includes/class-coblocks-block-assets.php
+++ b/includes/class-coblocks-block-assets.php
@@ -596,6 +596,11 @@ public function coblocks_enqueue_scripts_for_core_blocks( $block_content, $block
 			);
 		}
 
+		// Enqueue frontend styles when a core block uses the uppercase rich-text format.
+		if ( false !== strpos( $block_content, 'class="uppercase"' ) ) {
+			wp_enqueue_style( 'coblocks-frontend' );
+		}
+
 		return $block_content;
 	}
 
@@ -641,6 +646,8 @@ public function has_coblocks_block( WP_Post $post_object ) {
 			array_filter(
 				array(
 					false !== strpos( $post_object->post_content, '<!-- wp:coblocks/' ),
+					// Detect CoBlocks rich-text format marks on core blocks (e.g. uppercase on core/paragraph) so frontend styles load when the format is in use.
+					false !== strpos( $post_object->post_content, 'class="uppercase"' ),
 					// Having core blocks here, ensures that enqueues from block_assets are loaded.
 					has_block( 'core/block', $post_object ),
 					has_block( 'core/button', $post_object ),