diff --git a/matrix-synapse/Chart.yaml b/matrix-synapse/Chart.yaml
index aa4299e..61ad4d7 100644
--- a/matrix-synapse/Chart.yaml
+++ b/matrix-synapse/Chart.yaml
@@ -17,6 +17,6 @@ dependencies:
     repository: "oci://docker.io/bitnamicharts"
     condition: postgresql.enabled
   - name: redis
-    version: "20.11.3"
+    version: "20.11.4"
     repository: "oci://docker.io/bitnamicharts"
     condition: redis.enabled
diff --git a/paperless-ngx/Chart.yaml b/paperless-ngx/Chart.yaml
index b369831..8517043 100644
--- a/paperless-ngx/Chart.yaml
+++ b/paperless-ngx/Chart.yaml
@@ -26,6 +26,6 @@ dependencies:
     repository: "oci://docker.io/bitnamicharts"
     condition: postgresql.enabled
   - name: redis
-    version: "20.11.3"
+    version: "20.11.4"
     repository: "oci://docker.io/bitnamicharts"
     condition: redis.enabled
diff --git a/pretix/Chart.yaml b/pretix/Chart.yaml
index 768b38d..d3f1cc6 100644
--- a/pretix/Chart.yaml
+++ b/pretix/Chart.yaml
@@ -20,6 +20,6 @@ dependencies:
     repository: "oci://docker.io/bitnamicharts"
     condition: postgresql.enabled
   - name: redis
-    version: "20.11.3"
+    version: "20.11.4"
     repository: "oci://docker.io/bitnamicharts"
     condition: redis.enabled