diff --git a/charts/gha-runner-scale-set/templates/_helpers.tpl b/charts/gha-runner-scale-set/templates/_helpers.tpl
index 9dfb615f..9550c9b2 100644
--- a/charts/gha-runner-scale-set/templates/_helpers.tpl
+++ b/charts/gha-runner-scale-set/templates/_helpers.tpl
@@ -104,6 +104,8 @@ args:
 env:
   - name: DOCKER_GROUP_GID
     value: "123"
+  - name: DOCKER_IPTABLES_LEGACY
+    value: "1"
 securityContext:
   privileged: true
 {{- if (ge (.Capabilities.KubeVersion.Minor | int) 29) }}
diff --git a/charts/gha-runner-scale-set/values.yaml b/charts/gha-runner-scale-set/values.yaml
index 5a0f4ca3..f1204c40 100644
--- a/charts/gha-runner-scale-set/values.yaml
+++ b/charts/gha-runner-scale-set/values.yaml
@@ -322,6 +322,8 @@ template:
   ##       env:
   ##         - name: DOCKER_GROUP_GID
   ##           value: "123"
+  ##         - name: DOCKER_IPTABLES_LEGACY
+  ##           value: "1"
   ##       securityContext:
   ##         privileged: true
   ##       restartPolicy: Always