diff --git a/charts/stable/putty/Chart.yaml b/charts/stable/putty/Chart.yaml
index b8a0be38ded..01ae1d564d9 100644
--- a/charts/stable/putty/Chart.yaml
+++ b/charts/stable/putty/Chart.yaml
@@ -9,7 +9,7 @@ annotations:
   trueforge.org/min_helm_version: "3.14"
   trueforge.org/train: stable
 apiVersion: v2
-appVersion: 26.03.1
+appVersion: 26.05.1
 dependencies:
   - name: common
     version: 29.3.4
@@ -36,5 +36,5 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/stable/putty
   - https://hub.docker.com/r/jlesage/putty
 type: application
-version: 15.3.0
+version: 15.4.0
 
diff --git a/charts/stable/putty/values.yaml b/charts/stable/putty/values.yaml
index 055447986a2..9d0ac9afa42 100644
--- a/charts/stable/putty/values.yaml
+++ b/charts/stable/putty/values.yaml
@@ -1,7 +1,7 @@
 # yaml-language-server: $schema=./values.schema.json
 image:
   repository: docker.io/jlesage/putty
-  tag: v26.03.1@sha256:fcfe27a2baed830b9561f1c52067ab9310405e3e33999683b00fb8ec5054d236
+  tag: v26.05.1@sha256:eb0c5b157846ee5fae341a6f61e17ef0165b620ae780ff6312e5077bce2c0459
   pullPolicy: IfNotPresent
 service:
   main: