diff --git a/CHANGELOG b/CHANGELOG
index f1c809c25..c8f403ee2 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,10 @@
+mkdocs-material-9.1.21+insiders-4.39.0 (2023-08-01)
+
+  * Added support for hoisting theme media files when building projects
+  * Added support for sorting pages on tags index for tags plugin
+  * Added support for adding date of last update to blog posts
+  * Fixed #5797: Parse error in typeset plugin (4.38.1 regression)
+
 mkdocs-material-9.1.21+insiders-4.38.1 (2023-08-01)
 
   * Improved nested serve mode for projects plugin
diff --git a/docs/insiders/changelog.md b/docs/insiders/changelog.md
index 8ad85f9dc..c658a13b1 100644
--- a/docs/insiders/changelog.md
+++ b/docs/insiders/changelog.md
@@ -2,6 +2,13 @@
 
 ## Material for MkDocs Insiders
 
+### 4.39.0 <small>August 3, 2023</small> { id="4.39.0" }
+
+- Added support for hoisting theme media files when building projects
+- Added support for sorting pages on tags index for tags plugin
+- Added support for adding date of last update to blog posts
+- Fixed #5797: Parse error in typeset plugin (4.38.1 regression)
+
 ### 4.38.1 <small>August 1, 2023</small> { id="4.38.1" }
 
 - Improved nested serve mode for projects plugin
diff --git a/docs/setup/building-an-optimized-site.md b/docs/setup/building-an-optimized-site.md
index 24c1837e1..d75a9370c 100644
--- a/docs/setup/building-an-optimized-site.md
+++ b/docs/setup/building-an-optimized-site.md
@@ -118,6 +118,28 @@ The following configuration options are available for projects:
           projects_dir: path/to/folder
     ```
 
+#### Hoisting
+
+The following configuration options are available for hoisting:
+
+[`hoisting`](#+projects.hoisting){ #+projects.hoisting }
+
+:   [:octicons-tag-24: insiders-4.39.0][Insiders] · :octicons-milestone-24:
+    Default: `true` – This option specifies whether the plugin should hoist all 
+    themes files to the top-level project. If you disable this setting, each
+    project will have a copy of the themes files, which in general, can be
+    considered redundant:
+
+    ``` yaml
+    plugins:
+      - projects:
+          hoisting: false
+    ```
+
+    It's generally advisable to enable hoisting, as it leads to faster
+    deployments and faster loading of your project's sites, because the files
+    are the same for all projects.
+
 ### Built-in optimize plugin
 
 [:octicons-heart-fill-24:{ .mdx-heart } Sponsors only][Insiders]{ .mdx-insiders } ·