diff --git a/CHANGELOG b/CHANGELOG
index 70cd620ed..10b439a9c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+mkdocs-material-8.1.11+insiders-4.8.2 (2022-02-10)
+
+  * Fixed #3559: Mermaid diagrams don't render inside closed details
+
 mkdocs-material-8.1.11 (2022-02-10)
 
   * Added Portuguese (Brasilian) translations
diff --git a/docs/insiders/changelog.md b/docs/insiders/changelog.md
index 26b31abfc..0776cad16 100644
--- a/docs/insiders/changelog.md
+++ b/docs/insiders/changelog.md
@@ -6,6 +6,10 @@ template: overrides/main.html
 
 ## Material for MkDocs Insiders
 
+### 4.8.2 <small>_ February 10, 2022</small> { id="4.8.2" }
+
+- Fixed #3559: Mermaid diagrams don't render inside closed `details`
+
 ### 4.8.1 <small>_ February 6, 2022</small> { id="4.8.1" }
 
 - Fixed jump back to top on mobile when using anchor following