diff --git a/wp-content/themes/twentyeleven/functions.php b/wp-content/themes/twentyeleven/functions.php
index b3b1466ef4..675e1badca 100644
--- a/wp-content/themes/twentyeleven/functions.php
+++ b/wp-content/themes/twentyeleven/functions.php
@@ -294,7 +294,7 @@ endif; // twentyeleven_setup
  */
 function twentyeleven_scripts_styles() {
 	// Theme block stylesheet.
-	wp_enqueue_style( 'twentyeleven-block-style', get_template_directory_uri() . '/blocks.css', array(), '20181230' );
+	wp_enqueue_style( 'twentyeleven-block-style', get_template_directory_uri() . '/blocks.css', array(), wp_get_theme()->get( 'Version' ) );
 }
 add_action( 'wp_enqueue_scripts', 'twentyeleven_scripts_styles' );
 
@@ -305,7 +305,7 @@ add_action( 'wp_enqueue_scripts', 'twentyeleven_scripts_styles' );
  */
 function twentyeleven_block_editor_styles() {
 	// Block styles.
-	wp_enqueue_style( 'twentyeleven-block-editor-style', get_template_directory_uri() . '/editor-blocks.css', array(), '20181230' );
+	wp_enqueue_style( 'twentyeleven-block-editor-style', get_template_directory_uri() . '/editor-blocks.css', array(), wp_get_theme()->get( 'Version' ) );
 }
 add_action( 'enqueue_block_editor_assets', 'twentyeleven_block_editor_styles' );
 
diff --git a/wp-content/themes/twentyeleven/header.php b/wp-content/themes/twentyeleven/header.php
index 39cbe89c11..56143a9e98 100644
--- a/wp-content/themes/twentyeleven/header.php
+++ b/wp-content/themes/twentyeleven/header.php
@@ -48,7 +48,7 @@ if ( ( $paged >= 2 || $page >= 2 ) && ! is_404() ) {
 ?>
 	</title>
 <link rel="profile" href="http://gmpg.org/xfn/11" />
-<link rel="stylesheet" type="text/css" media="all" href="<?php bloginfo( 'stylesheet_url' ); ?>" />
+<link rel="stylesheet" type="text/css" media="all" href="<?php bloginfo( 'stylesheet_url' ); ?>?ver=<?php echo esc_attr( wp_get_theme()->get( 'Version' ) ); ?>" />
 <link rel="pingback" href="<?php echo esc_url( get_bloginfo( 'pingback_url' ) ); ?>">
 <!--[if lt IE 9]>
 <script src="<?php echo get_template_directory_uri(); ?>/js/html5.js" type="text/javascript"></script>
diff --git a/wp-content/themes/twentyeleven/inc/theme-options.php b/wp-content/themes/twentyeleven/inc/theme-options.php
index fb2ff32ad0..89b3338cb0 100644
--- a/wp-content/themes/twentyeleven/inc/theme-options.php
+++ b/wp-content/themes/twentyeleven/inc/theme-options.php
@@ -17,7 +17,7 @@
  * @param string $hook_suffix An admin page's hook suffix.
  */
 function twentyeleven_admin_enqueue_scripts( $hook_suffix ) {
-	wp_enqueue_style( 'twentyeleven-theme-options', get_template_directory_uri() . '/inc/theme-options.css', false, '2011-04-28' );
+	wp_enqueue_style( 'twentyeleven-theme-options', get_template_directory_uri() . '/inc/theme-options.css', false, wp_get_theme()->get( 'Version' ) );
 	wp_enqueue_script( 'twentyeleven-theme-options', get_template_directory_uri() . '/inc/theme-options.js', array( 'farbtastic' ), '2011-06-10' );
 	wp_enqueue_style( 'farbtastic' );
 }
@@ -407,7 +407,7 @@ function twentyeleven_enqueue_color_scheme() {
 	$color_scheme = $options['color_scheme'];
 
 	if ( 'dark' == $color_scheme ) {
-		wp_enqueue_style( 'dark', get_template_directory_uri() . '/colors/dark.css', array(), null );
+		wp_enqueue_style( 'dark', get_template_directory_uri() . '/colors/dark.css', array(), wp_get_theme()->get( 'Version' ) );
 	}
 
 	/**
diff --git a/wp-content/themes/twentyfifteen/functions.php b/wp-content/themes/twentyfifteen/functions.php
index db6451f0b9..5d51327d91 100644
--- a/wp-content/themes/twentyfifteen/functions.php
+++ b/wp-content/themes/twentyfifteen/functions.php
@@ -367,17 +367,17 @@ function twentyfifteen_scripts() {
 	wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.2' );
 
 	// Load our main stylesheet.
-	wp_enqueue_style( 'twentyfifteen-style', get_stylesheet_uri() );
+	wp_enqueue_style( 'twentyfifteen-style', get_stylesheet_uri(), array(), wp_get_theme()->get( 'Version' ) );
 
 	// Theme block stylesheet.
-	wp_enqueue_style( 'twentyfifteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentyfifteen-style' ), '20181230' );
+	wp_enqueue_style( 'twentyfifteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentyfifteen-style' ), wp_get_theme()->get( 'Version' ) );
 
 	// Load the Internet Explorer specific stylesheet.
-	wp_enqueue_style( 'twentyfifteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentyfifteen-style' ), '20141010' );
+	wp_enqueue_style( 'twentyfifteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentyfifteen-style' ), wp_get_theme()->get( 'Version' ) );
 	wp_style_add_data( 'twentyfifteen-ie', 'conditional', 'lt IE 9' );
 
 	// Load the Internet Explorer 7 specific stylesheet.
-	wp_enqueue_style( 'twentyfifteen-ie7', get_template_directory_uri() . '/css/ie7.css', array( 'twentyfifteen-style' ), '20141010' );
+	wp_enqueue_style( 'twentyfifteen-ie7', get_template_directory_uri() . '/css/ie7.css', array( 'twentyfifteen-style' ), wp_get_theme()->get( 'Version' ) );
 	wp_style_add_data( 'twentyfifteen-ie7', 'conditional', 'lt IE 8' );
 
 	wp_enqueue_script( 'twentyfifteen-skip-link-focus-fix', get_template_directory_uri() . '/js/skip-link-focus-fix.js', array(), '20141010', true );
@@ -409,7 +409,7 @@ add_action( 'wp_enqueue_scripts', 'twentyfifteen_scripts' );
  */
 function twentyfifteen_block_editor_styles() {
 	// Block styles.
-	wp_enqueue_style( 'twentyfifteen-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), '20181230' );
+	wp_enqueue_style( 'twentyfifteen-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), wp_get_theme()->get( 'Version' ) );
 	// Add custom fonts.
 	wp_enqueue_style( 'twentyfifteen-fonts', twentyfifteen_fonts_url(), array(), null );
 }
diff --git a/wp-content/themes/twentyfourteen/functions.php b/wp-content/themes/twentyfourteen/functions.php
index c017dac644..59906a5fe3 100644
--- a/wp-content/themes/twentyfourteen/functions.php
+++ b/wp-content/themes/twentyfourteen/functions.php
@@ -316,13 +316,13 @@ function twentyfourteen_scripts() {
 	wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.0.3' );
 
 	// Load our main stylesheet.
-	wp_enqueue_style( 'twentyfourteen-style', get_stylesheet_uri() );
+	wp_enqueue_style( 'twentyfourteen-style', get_stylesheet_uri(), array(), wp_get_theme()->get( 'Version' ) );
 
 	// Theme block stylesheet.
-	wp_enqueue_style( 'twentyfourteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentyfourteen-style' ), '20181230' );
+	wp_enqueue_style( 'twentyfourteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentyfourteen-style' ), wp_get_theme()->get( 'Version' ) );
 
 	// Load the Internet Explorer specific stylesheet.
-	wp_enqueue_style( 'twentyfourteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentyfourteen-style' ), '20131205' );
+	wp_enqueue_style( 'twentyfourteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentyfourteen-style' ), wp_get_theme()->get( 'Version' ) );
 	wp_style_add_data( 'twentyfourteen-ie', 'conditional', 'lt IE 9' );
 
 	if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
@@ -395,7 +395,7 @@ add_filter( 'wp_resource_hints', 'twentyfourteen_resource_hints', 10, 2 );
  */
 function twentyfourteen_block_editor_styles() {
 	// Block styles.
-	wp_enqueue_style( 'twentyfourteen-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), '20181230' );
+	wp_enqueue_style( 'twentyfourteen-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), wp_get_theme()->get( 'Version' ) );
 	// Add custom fonts.
 	wp_enqueue_style( 'twentyfourteen-fonts', twentyfourteen_font_url(), array(), null );
 }
diff --git a/wp-content/themes/twentyseventeen/functions.php b/wp-content/themes/twentyseventeen/functions.php
index a8f10773f9..727ccd6a55 100644
--- a/wp-content/themes/twentyseventeen/functions.php
+++ b/wp-content/themes/twentyseventeen/functions.php
@@ -446,24 +446,24 @@ function twentyseventeen_scripts() {
 	wp_enqueue_style( 'twentyseventeen-fonts', twentyseventeen_fonts_url(), array(), null );
 
 	// Theme stylesheet.
-	wp_enqueue_style( 'twentyseventeen-style', get_stylesheet_uri() );
+	wp_enqueue_style( 'twentyseventeen-style', get_stylesheet_uri(), array(), wp_get_theme()->get( 'Version' ) );
 
 	// Theme block stylesheet.
-	wp_enqueue_style( 'twentyseventeen-block-style', get_theme_file_uri( '/assets/css/blocks.css' ), array( 'twentyseventeen-style' ), '1.1' );
+	wp_enqueue_style( 'twentyseventeen-block-style', get_theme_file_uri( '/assets/css/blocks.css' ), array( 'twentyseventeen-style' ), wp_get_theme()->get( 'Version' ) );
 
 	// Load the dark colorscheme.
 	if ( 'dark' === get_theme_mod( 'colorscheme', 'light' ) || is_customize_preview() ) {
-		wp_enqueue_style( 'twentyseventeen-colors-dark', get_theme_file_uri( '/assets/css/colors-dark.css' ), array( 'twentyseventeen-style' ), '1.0' );
+		wp_enqueue_style( 'twentyseventeen-colors-dark', get_theme_file_uri( '/assets/css/colors-dark.css' ), array( 'twentyseventeen-style' ), wp_get_theme()->get( 'Version' ) );
 	}
 
 	// Load the Internet Explorer 9 specific stylesheet, to fix display issues in the Customizer.
 	if ( is_customize_preview() ) {
-		wp_enqueue_style( 'twentyseventeen-ie9', get_theme_file_uri( '/assets/css/ie9.css' ), array( 'twentyseventeen-style' ), '1.0' );
+		wp_enqueue_style( 'twentyseventeen-ie9', get_theme_file_uri( '/assets/css/ie9.css' ), array( 'twentyseventeen-style' ), wp_get_theme()->get( 'Version' ) );
 		wp_style_add_data( 'twentyseventeen-ie9', 'conditional', 'IE 9' );
 	}
 
 	// Load the Internet Explorer 8 specific stylesheet.
-	wp_enqueue_style( 'twentyseventeen-ie8', get_theme_file_uri( '/assets/css/ie8.css' ), array( 'twentyseventeen-style' ), '1.0' );
+	wp_enqueue_style( 'twentyseventeen-ie8', get_theme_file_uri( '/assets/css/ie8.css' ), array( 'twentyseventeen-style' ), wp_get_theme()->get( 'Version' ) );
 	wp_style_add_data( 'twentyseventeen-ie8', 'conditional', 'lt IE 9' );
 
 	// Load the html5 shiv.
@@ -507,7 +507,7 @@ add_action( 'wp_enqueue_scripts', 'twentyseventeen_scripts' );
  */
 function twentyseventeen_block_editor_styles() {
 	// Block styles.
-	wp_enqueue_style( 'twentyseventeen-block-editor-style', get_theme_file_uri( '/assets/css/editor-blocks.css' ), array(), '1.1' );
+	wp_enqueue_style( 'twentyseventeen-block-editor-style', get_theme_file_uri( '/assets/css/editor-blocks.css' ), array(), wp_get_theme()->get( 'Version' ) );
 	// Add custom fonts.
 	wp_enqueue_style( 'twentyseventeen-fonts', twentyseventeen_fonts_url(), array(), null );
 }
diff --git a/wp-content/themes/twentysixteen/functions.php b/wp-content/themes/twentysixteen/functions.php
index 68e4a5ef03..deedf95d66 100644
--- a/wp-content/themes/twentysixteen/functions.php
+++ b/wp-content/themes/twentysixteen/functions.php
@@ -367,21 +367,21 @@ function twentysixteen_scripts() {
 	wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.4.1' );
 
 	// Theme stylesheet.
-	wp_enqueue_style( 'twentysixteen-style', get_stylesheet_uri() );
+	wp_enqueue_style( 'twentysixteen-style', get_stylesheet_uri(), array(), wp_get_theme()->get( 'Version' ) );
 
 	// Theme block stylesheet.
-	wp_enqueue_style( 'twentysixteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentysixteen-style' ), '20181230' );
+	wp_enqueue_style( 'twentysixteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentysixteen-style' ), wp_get_theme()->get( 'Version' ) );
 
 	// Load the Internet Explorer specific stylesheet.
-	wp_enqueue_style( 'twentysixteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentysixteen-style' ), '20160816' );
+	wp_enqueue_style( 'twentysixteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentysixteen-style' ), wp_get_theme()->get( 'Version' ) );
 	wp_style_add_data( 'twentysixteen-ie', 'conditional', 'lt IE 10' );
 
 	// Load the Internet Explorer 8 specific stylesheet.
-	wp_enqueue_style( 'twentysixteen-ie8', get_template_directory_uri() . '/css/ie8.css', array( 'twentysixteen-style' ), '20160816' );
+	wp_enqueue_style( 'twentysixteen-ie8', get_template_directory_uri() . '/css/ie8.css', array( 'twentysixteen-style' ), wp_get_theme()->get( 'Version' ) );
 	wp_style_add_data( 'twentysixteen-ie8', 'conditional', 'lt IE 9' );
 
 	// Load the Internet Explorer 7 specific stylesheet.
-	wp_enqueue_style( 'twentysixteen-ie7', get_template_directory_uri() . '/css/ie7.css', array( 'twentysixteen-style' ), '20160816' );
+	wp_enqueue_style( 'twentysixteen-ie7', get_template_directory_uri() . '/css/ie7.css', array( 'twentysixteen-style' ), wp_get_theme()->get( 'Version' ) );
 	wp_style_add_data( 'twentysixteen-ie7', 'conditional', 'lt IE 8' );
 
 	// Load the html5 shiv.
@@ -418,7 +418,7 @@ add_action( 'wp_enqueue_scripts', 'twentysixteen_scripts' );
  */
 function twentysixteen_block_editor_styles() {
 	// Block styles.
-	wp_enqueue_style( 'twentysixteen-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), '20181230' );
+	wp_enqueue_style( 'twentysixteen-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), wp_get_theme()->get( 'Version' ) );
 	// Add custom fonts.
 	wp_enqueue_style( 'twentysixteen-fonts', twentysixteen_fonts_url(), array(), null );
 }
diff --git a/wp-content/themes/twentyten/functions.php b/wp-content/themes/twentyten/functions.php
index a3617c6a1a..ea6654913b 100644
--- a/wp-content/themes/twentyten/functions.php
+++ b/wp-content/themes/twentyten/functions.php
@@ -703,7 +703,7 @@ add_filter( 'widget_tag_cloud_args', 'twentyten_widget_tag_cloud_args' );
  */
 function twentyten_scripts_styles() {
 	// Theme block stylesheet.
-	wp_enqueue_style( 'twentyten-block-style', get_template_directory_uri() . '/blocks.css', array(), '20181018' );
+	wp_enqueue_style( 'twentyten-block-style', get_template_directory_uri() . '/blocks.css', array(), wp_get_theme()->get( 'Version' ) );
 }
 add_action( 'wp_enqueue_scripts', 'twentyten_scripts_styles' );
 
@@ -714,7 +714,7 @@ add_action( 'wp_enqueue_scripts', 'twentyten_scripts_styles' );
  */
 function twentyten_block_editor_styles() {
 	// Block styles.
-	wp_enqueue_style( 'twentyten-block-editor-style', get_template_directory_uri() . '/editor-blocks.css' );
+	wp_enqueue_style( 'twentyten-block-editor-style', get_template_directory_uri() . '/editor-blocks.css', array(), wp_get_theme()->get( 'Version' ) );
 }
 add_action( 'enqueue_block_editor_assets', 'twentyten_block_editor_styles' );
 
diff --git a/wp-content/themes/twentyten/header.php b/wp-content/themes/twentyten/header.php
index 23a186340a..17bdbda024 100644
--- a/wp-content/themes/twentyten/header.php
+++ b/wp-content/themes/twentyten/header.php
@@ -38,7 +38,7 @@ if ( ( $paged >= 2 || $page >= 2 ) && ! is_404() ) {
 ?>
 	</title>
 <link rel="profile" href="http://gmpg.org/xfn/11" />
-<link rel="stylesheet" type="text/css" media="all" href="<?php bloginfo( 'stylesheet_url' ); ?>" />
+<link rel="stylesheet" type="text/css" media="all" href="<?php bloginfo( 'stylesheet_url' ); ?>?ver=<?php echo esc_attr( wp_get_theme()->get( 'Version' ) ); ?>" />
 <link rel="pingback" href="<?php echo esc_url( get_bloginfo( 'pingback_url' ) ); ?>">
 <?php
 	/*
diff --git a/wp-content/themes/twentythirteen/functions.php b/wp-content/themes/twentythirteen/functions.php
index f10e2697f4..d7c90af5c9 100644
--- a/wp-content/themes/twentythirteen/functions.php
+++ b/wp-content/themes/twentythirteen/functions.php
@@ -281,13 +281,13 @@ function twentythirteen_scripts_styles() {
 	wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.0.3' );
 
 	// Loads our main stylesheet.
-	wp_enqueue_style( 'twentythirteen-style', get_stylesheet_uri(), array(), '2013-07-18' );
+	wp_enqueue_style( 'twentythirteen-style', get_stylesheet_uri(), array(), wp_get_theme()->get( 'Version' ) );
 
 	// Theme block stylesheet.
-	wp_enqueue_style( 'twentythirteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentythirteen-style' ), '2018-12-30' );
+	wp_enqueue_style( 'twentythirteen-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentythirteen-style' ), wp_get_theme()->get( 'Version' ) );
 
 	// Loads the Internet Explorer specific stylesheet.
-	wp_enqueue_style( 'twentythirteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentythirteen-style' ), '2013-07-18' );
+	wp_enqueue_style( 'twentythirteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentythirteen-style' ), wp_get_theme()->get( 'Version' ) );
 	wp_style_add_data( 'twentythirteen-ie', 'conditional', 'lt IE 9' );
 }
 add_action( 'wp_enqueue_scripts', 'twentythirteen_scripts_styles' );
diff --git a/wp-content/themes/twentytwelve/functions.php b/wp-content/themes/twentytwelve/functions.php
index 22c212edbe..27681d2209 100644
--- a/wp-content/themes/twentytwelve/functions.php
+++ b/wp-content/themes/twentytwelve/functions.php
@@ -199,13 +199,13 @@ function twentytwelve_scripts_styles() {
 	}
 
 	// Loads our main stylesheet.
-	wp_enqueue_style( 'twentytwelve-style', get_stylesheet_uri() );
+	wp_enqueue_style( 'twentytwelve-style', get_stylesheet_uri(), array(), wp_get_theme()->get( 'Version' ) );
 
 	// Theme block stylesheet.
-	wp_enqueue_style( 'twentytwelve-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentytwelve-style' ), '20181230' );
+	wp_enqueue_style( 'twentytwelve-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentytwelve-style' ), wp_get_theme()->get( 'Version' ) );
 
 	// Loads the Internet Explorer specific stylesheet.
-	wp_enqueue_style( 'twentytwelve-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentytwelve-style' ), '20121010' );
+	wp_enqueue_style( 'twentytwelve-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentytwelve-style' ), wp_get_theme()->get( 'Version' ) );
 	$wp_styles->add_data( 'twentytwelve-ie', 'conditional', 'lt IE 9' );
 }
 add_action( 'wp_enqueue_scripts', 'twentytwelve_scripts_styles' );
@@ -217,7 +217,7 @@ add_action( 'wp_enqueue_scripts', 'twentytwelve_scripts_styles' );
  */
 function twentytwelve_block_editor_styles() {
 	// Block styles.
-	wp_enqueue_style( 'twentytwelve-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), '20181230' );
+	wp_enqueue_style( 'twentytwelve-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), wp_get_theme()->get( 'Version' ) );
 	// Add custom fonts.
 	wp_enqueue_style( 'twentytwelve-fonts', twentytwelve_get_font_url(), array(), null );
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 17056e633b..1fa749e98b 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2-beta3-45212';
+$wp_version = '5.2-beta3-45213';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.