diff --git a/functionMap.php b/functionMap.php
index ba51871..0cb4cbc 100644
--- a/functionMap.php
+++ b/functionMap.php
@@ -156,6 +156,7 @@
     'get_terms' => ["(\$args is array{fields: 'count'}&array ? numeric-string : (\$args is array{fields: 'names'|'slugs'}&array ? list<string> : (\$args is array{fields: 'id=>name'|'id=>slug'}&array ? array<int, string> : (\$args is array{fields: 'id=>parent'}&array ? array<int, int> : (\$args is array{fields: 'ids'|'tt_ids'}&array ? list<int> : array<int, \WP_Term>)))))|\WP_Error", 'deprecated' => "''"],
     'get_the_author' => [null, 'deprecated' => "''"],
     'get_the_permalink' => ['($post is \WP_Post ? string : string|false)'],
+    'get_transient' => [null, '@phpstan-impure' => ''],
     'get_user' => ['($user_id is int<min, 0> ? false : \WP_User|false)'],
     'get_user_by' => ["(\$field is 'id'|'ID' ? (\$value is int<min, 0> ? false : \WP_User|false) : \WP_User|false)"],
     'get_user_option' => [null, 'deprecated' => "''"],
@@ -295,6 +296,7 @@
     'wp_list_pages' => ['($args is array{echo: false}&array ? string : void)'],
     'wp_list_post_revisions' => ['void', 'type' => "'all'|'revision'|'autosave'"],
     'wp_loginout' => ['($display is true ? void : string)'],
+    'wp_mail' => [null, '@phpstan-impure' => ''],
     'wp_media_insert_url_form' => ['non-falsy-string'],
     'wp_nav_menu_manage_columns' => ["array{_title: string, cb: '<input type=\"checkbox\" />', link-target: string, title-attribute: string, css-classes: string, xfn: string, description: string}"],
     'wp_next_scheduled' => [null, 'args' => $cronArgsType],
diff --git a/wordpress-stubs.php b/wordpress-stubs.php
index 919ec08..3649201 100644
--- a/wordpress-stubs.php
+++ b/wordpress-stubs.php
@@ -133044,6 +133044,7 @@ function delete_transient($transient)
      *
      * @param string $transient Transient name. Expected to not be SQL-escaped.
      * @return mixed Value of transient.
+     * @phpstan-impure
      */
     function get_transient($transient)
     {
@@ -133743,6 +133744,7 @@ function cache_users($user_ids)
      * @param string|string[] $attachments Optional. Paths to files to attach.
      * @param string|string[] $embeds      Optional. Paths to files to embed.
      * @return bool Whether the email was sent successfully.
+     * @phpstan-impure
      */
     function wp_mail($to, $subject, $message, $headers = '', $attachments = array(), $embeds = array())
     {