(doc) Update release notes [skip ci]
diff --git a/src/site/markdown/releasenotes.md b/src/site/markdown/releasenotes.md
index f3c18e3..300e557 100644
--- a/src/site/markdown/releasenotes.md
+++ b/src/site/markdown/releasenotes.md
@@ -23,7 +23,7 @@
 
 ## Version 3.19.0
 
-**Release Date:** ???
+**Release Date:** 2022-09-01
 
 **JIRA:** [Release Notes - Maven PMD Plugin - Version 3.19.0](https://issues.apache.org/jira/projects/MPMD/versions/12352255)