diff --git a/chart/values.yaml b/chart/values.yaml
index 18fde35b35cd72a59bea655f042e8d756c1cc421..aaaec67363e15f54e6a434a8764f6a47ab63d351 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: "9.9.0-bb.4"
+      tag: "9.9.1-bb.0"
     helmRepo:
       repoName: "registry1"
       chartName: "mattermost"
-      tag: "9.9.0-bb.4"
+      tag: "9.9.1-bb.0"
 
     # -- Flux reconciliation overrides specifically for the Mattermost Package
     flux: {}