diff --git a/chart/values.yaml b/chart/values.yaml
index a9cbd2e9071508c9b5716c232f6865cabe5601fd..af0b5bcb245b38b0e714e125805f35713ef0f564 100644
--- a/chart/values.yaml
+++ b/chart/values.yaml
@@ -1616,11 +1616,11 @@ addons:
     git:
       repo: https://repo1.dso.mil/big-bang/product/packages/mattermost.git
       path: "./chart"
-      tag: "9.0.0-bb.0"
+      tag: "9.1.1-bb.0"
     helmRepo:
       repoName: "registry1"
       chartName: "mattermost"
-      tag: "9.0.0-bb.0"
+      tag: "9.1.1-bb.0"
 
     # -- Flux reconciliation overrides specifically for the Mattermost Package
     flux: {}