diff --git a/docs/pages/release_notes.md b/docs/pages/release_notes.md
index 949fdcced5..fcf470433e 100644
--- a/docs/pages/release_notes.md
+++ b/docs/pages/release_notes.md
@@ -21,6 +21,8 @@ This is a {{ site.pmd.release_type }} release.
 *   java-codestyle
     *   [#1543](https://github.com/pmd/pmd/issues/1543): \[java] LinguisticNaming should ignore overriden methods
     *   [#1547](https://github.com/pmd/pmd/issues/1547): \[java] AtLeastOneConstructorRule: false-positive with lombok.AllArgsConstructor
+*   java-multithreading
+    *   [#1633](https://github.com/pmd/pmd/issues/1633): \[java] UnsynchronizedStaticFormatter reports commons lang FastDateFormat
 
 ### API Changes
 
@@ -29,6 +31,7 @@ This is a {{ site.pmd.release_type }} release.
 *   [#1623](https://github.com/pmd/pmd/pull/1623): \[java] Fix lombok.AllArgsConstructor support - [Bobby Wertman](https://github.com/CasualSuperman)
 *   [#1625](https://github.com/pmd/pmd/pull/1625): \[java] UnusedImports false positive for method parameter type in @see Javadoc - [Shubham](https://github.com/Shubham-2k17)
 *   [#1628](https://github.com/pmd/pmd/pull/1628): \[java] LinguisticNaming should ignore overriden methods - [Shubham](https://github.com/Shubham-2k17)
+*   [#1635](https://github.com/pmd/pmd/pull/1635): \[java] UnsynchronizedStaticFormatter reports commons lang FastDateFormat - [Shubham](https://github.com/Shubham-2k17)
 
 {% endtocmaker %}