diff --git a/README.md b/README.md
index b92036ded..4d54a53d0 100644
--- a/README.md
+++ b/README.md
@@ -78,7 +78,7 @@ The following table describes which version of **monaco-languageclient** and **m
 
 | monaco-languageclient | monaco-vscode-api | monaco-editor | comment |
 | :----         | :----   | :---   | :--- |
-| 6.4.0         | 1.81.0  | 0.41.0 | Released 2023-08-1x |
+| 6.4.0         | 1.81.0  | 0.41.0 | Released 2023-08-10 |
 | 6.3.0         | 1.80.2  | 0.40.0 | Released 2023-08-04 |
 | 6.2.0         | 1.79.3  | 0.39.0 | Released 2023-06-16 |
 | 6.1.0         | 1.79.1  | 0.38.0 | Released 2023-06-12 |
diff --git a/packages/client/CHANGELOG.md b/packages/client/CHANGELOG.md
index cfe2eccb6..5d03039e2 100644
--- a/packages/client/CHANGELOG.md
+++ b/packages/client/CHANGELOG.md
@@ -2,9 +2,9 @@
 
 All notable changes to this npm module are documented in this file.
 
-## [6.4.0] - 2023-08-1x
+## [6.4.0] - 2023-08-10
 
-- Update to `monaco-editor` `0.41.0` and `monaco-vscode-api` `1.81.0` [#51x](https://github.com/TypeFox/monaco-languageclient/pull/51x)
+- Update to `monaco-editor` `0.41.0` and `monaco-vscode-api` `1.81.0` [#520](https://github.com/TypeFox/monaco-languageclient/pull/520)
 
 ## [6.3.0] - 2023-08-04