diff --git a/charts/stable/firefox/Chart.yaml b/charts/stable/firefox/Chart.yaml
index f57c9313da1..7cb04084778 100644
--- a/charts/stable/firefox/Chart.yaml
+++ b/charts/stable/firefox/Chart.yaml
@@ -6,7 +6,7 @@ annotations:
   truecharts.org/min_helm_version: "3.11"
   truecharts.org/train: stable
 apiVersion: v2
-appVersion: 131.0.3
+appVersion: 133.0.3
 dependencies:
   - name: common
     version: 25.2.2
@@ -33,4 +33,4 @@ sources:
   - https://github.com/linuxserver/docker-firefox
   - https://github.com/truecharts/charts/tree/master/charts/stable/firefox
 type: application
-version: 19.1.0
+version: 20.0.0
diff --git a/charts/stable/firefox/values.yaml b/charts/stable/firefox/values.yaml
index 909623a7ab5..38d88d84c86 100644
--- a/charts/stable/firefox/values.yaml
+++ b/charts/stable/firefox/values.yaml
@@ -1,7 +1,7 @@
 image:
   repository: ghcr.io/linuxserver/firefox
   pullPolicy: IfNotPresent
-  tag: 131.0.3@sha256:8fac25c39e21cc70d94ae34ad22940acf45fa1fc5008ee14d7f0d945ad49b5f8
+  tag: 133.0.3@sha256:9c68d48a040f2c753349135bae59dc6081ed3eddb3b8d161197062adee2d028f
 securityContext:
   container:
     readOnlyRootFilesystem: false