diff --git a/charts/group-challenge/Chart.yaml b/charts/group-challenge/Chart.yaml
index 139b72b..77ed6e3 100644
--- a/charts/group-challenge/Chart.yaml
+++ b/charts/group-challenge/Chart.yaml
@@ -2,8 +2,8 @@ apiVersion: v2
 name: group-challenge
 description: Group challenge helm chart
 type: application
-version: 1.2.0
-appVersion: "0.10.0"
+version: 1.2.1
+appVersion: "0.11.0"
 dependencies:
   - name: postgresql
     version: 11.9.6
diff --git a/charts/group-challenge/values.yaml b/charts/group-challenge/values.yaml
index e11e64a..29ed291 100644
--- a/charts/group-challenge/values.yaml
+++ b/charts/group-challenge/values.yaml
@@ -85,6 +85,8 @@ groupChallenge:
       url: "http://localhost:8081"
       sharedLocalCacheDir: "/tmp/group-challenge-cache"
       thumbnailQuality: 90
+      maxThumbnailWidth: 420
+      maxThumbnailHeight: 420
       fullSizeQuality: 75
       maxFullWidth: 1280
       maxFullHeight: 0