diff --git a/wp-includes/pluggable.php b/wp-includes/pluggable.php
index 9936858ef7..535e295276 100644
--- a/wp-includes/pluggable.php
+++ b/wp-includes/pluggable.php
@@ -976,6 +976,9 @@ if ( ! function_exists( 'wp_clear_auth_cookie' ) ) :
 		setcookie( PASS_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
 		setcookie( USER_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
 		setcookie( PASS_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
+
+		// Post password cookie
+		setcookie( 'wp-postpass_' . COOKIEHASH, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
 	}
 endif;
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 0129f08037..5ab1215644 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-43315';
+$wp_version = '5.0-alpha-43317';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.