diff --git a/charts/buildbarn/values.yaml b/charts/buildbarn/values.yaml
index ae22342..604a93c 100644
--- a/charts/buildbarn/values.yaml
+++ b/charts/buildbarn/values.yaml
@@ -408,7 +408,7 @@ worker:
       # worker.volumeInitContainer.image.repository -- image repository
       repository: busybox
       # worker.volumeInitContainer.image.tag -- image tag
-      tag: 1.31.1-uclibc
+      tag: 1.36.1-uclibc
 
   workerContainer:
     image:
diff --git a/charts/gradle-cache/values.yaml b/charts/gradle-cache/values.yaml
index a93613a..dd89194 100644
--- a/charts/gradle-cache/values.yaml
+++ b/charts/gradle-cache/values.yaml
@@ -11,7 +11,7 @@ initContainer:
     # initContainer.image.repository -- image repository for initContainer
     repository: busybox
     # initContainer.image.tag -- image tag for initContainer
-    tag: "1.33.0"
+    tag: "1.36.1"
 
 # imagePullSecrets -- image pull secret for private images
 imagePullSecrets: []