diff --git a/chart/values.yaml b/chart/values.yaml
index d797e3b8936995d12278496eb74a08746116e435..d27f2dd7a660ff1e44805b422579ffe767f9c569 100644
--- a/chart/values.yaml
+++ b/chart/values.yaml
@@ -1648,11 +1648,11 @@ addons:
     git:
       repo: https://repo1.dso.mil/big-bang/product/packages/mattermost.git
       path: "./chart"
-      tag: "10.4.1-bb.0"
+      tag: "10.4.2-bb.0"
     helmRepo:
       repoName: "registry1"
       chartName: "mattermost"
-      tag: "10.4.1-bb.0"
+      tag: "10.4.2-bb.0"
 
     # -- Flux reconciliation overrides specifically for the Mattermost Package
     flux: {}