diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4396dfdf6..ccb77abf6 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{".":"6.4.1"}
+{".":"6.4.2"}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ea3469e85..99c308da2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [6.4.2](https://github.com/MapColonies/pycsw/compare/v6.4.1...v6.4.2) (2026-05-27)
+
+
+### Helm Changes
+
+* upgrade nginx version and refactor configuration files tosupport nginx extensions( MAPCO-10120) ([#113](https://github.com/MapColonies/pycsw/issues/113)) ([8d97c67](https://github.com/MapColonies/pycsw/commit/8d97c6743053821ad451a5cf3ee6e3482200e28d))
+
 ## [6.4.1](https://github.com/MapColonies/pycsw/compare/v6.4.0...v6.4.1) (2026-01-19)
 
 
diff --git a/helm/3d/Chart.yaml b/helm/3d/Chart.yaml
index bb7c728fd..fe32fc988 100644
--- a/helm/3d/Chart.yaml
+++ b/helm/3d/Chart.yaml
@@ -2,8 +2,8 @@ apiVersion: v2
 name: pycsw
 description: A Helm chart for 3d pycsw deployment
 type: application
-version: 6.4.1
-appVersion: 6.4.1
+version: 6.4.2
+appVersion: 6.4.2
 dependencies:
   - name: nginx
     version: 1.1.0
diff --git a/helm/dem/Chart.yaml b/helm/dem/Chart.yaml
index 510a56d69..b49fa340b 100644
--- a/helm/dem/Chart.yaml
+++ b/helm/dem/Chart.yaml
@@ -2,8 +2,8 @@ apiVersion: v2
 name: pycsw
 description: A Helm chart for pycsw service
 type: application
-version: 6.4.1
-appVersion: 6.4.1
+version: 6.4.2
+appVersion: 6.4.2
 dependencies:
   - name: nginx
     version: 1.1.0
diff --git a/helm/raster/Chart.yaml b/helm/raster/Chart.yaml
index 21cfda4b3..945b9d48e 100644
--- a/helm/raster/Chart.yaml
+++ b/helm/raster/Chart.yaml
@@ -2,8 +2,8 @@ apiVersion: v2
 name: pycsw
 description: A Helm chart for pycsw service
 type: application
-version: 6.4.1
-appVersion: 6.4.1
+version: 6.4.2
+appVersion: 6.4.2
 dependencies:
   - name: nginx
     version: 2.1.6