diff --git a/deployment/e2e-ci-runner-rbac.yaml b/deployment/e2e-ci-runner-rbac.yaml
index d806f6b..e6f32e2 100644
--- a/deployment/e2e-ci-runner-rbac.yaml
+++ b/deployment/e2e-ci-runner-rbac.yaml
@@ -2,9 +2,9 @@
 # RBAC for the GitHub Actions CI runner to manage the E2E Headlamp instance.
 # CI-only test fixture — NOT for production use.
 #
-# Grants the ARC runner service account permissions in the default namespace
-# to deploy and tear down a dedicated Headlamp instance via Helm.
-# E2E resources run in `default` — nothing persists beyond a test run.
+# Grants the ARC runner service account permissions in the privilegedescalation-dev
+# namespace to deploy and tear down a dedicated Headlamp instance via Helm.
+# E2E resources run in `privilegedescalation-dev` — nothing persists beyond a test run.
 #
 # Plugin is loaded via ConfigMap volume mount — no custom Docker images.
 #
@@ -14,7 +14,7 @@ apiVersion: rbac.authorization.k8s.io/v1
 kind: Role
 metadata:
   name: e2e-ci-runner
-  namespace: default
+  namespace: privilegedescalation-dev
 rules:
   # Helm needs to manage these resources for the Headlamp chart
   - apiGroups: ["apps"]
@@ -35,7 +35,7 @@ apiVersion: rbac.authorization.k8s.io/v1
 kind: RoleBinding
 metadata:
   name: e2e-ci-runner-binding
-  namespace: default
+  namespace: privilegedescalation-dev
 subjects:
   - kind: ServiceAccount
     name: runners-privilegedescalation-gha-rs-no-permission
diff --git a/deployment/headlamp-e2e-values.yaml b/deployment/headlamp-e2e-values.yaml
index 37d6539..8bd540d 100644
--- a/deployment/headlamp-e2e-values.yaml
+++ b/deployment/headlamp-e2e-values.yaml
@@ -7,7 +7,7 @@
 #
 # Usage:
 #   helm install headlamp-e2e headlamp/headlamp \
-#     -n default \
+#     -n privilegedescalation-dev \
 #     -f deployment/headlamp-e2e-values.yaml \
 #     --set image.registry=ghcr.io \
 #     --set image.repository=headlamp-k8s/headlamp \
diff --git a/scripts/deploy-e2e-headlamp.sh b/scripts/deploy-e2e-headlamp.sh
index 08512cc..2f1798c 100755
--- a/scripts/deploy-e2e-headlamp.sh
+++ b/scripts/deploy-e2e-headlamp.sh
@@ -5,8 +5,8 @@
 # a ConfigMap volume mount. No custom Docker images — the plugin is built
 # in CI and injected as a ConfigMap.
 #
-# E2E resources are deployed to the `default` namespace. Nothing persists
-# beyond the test run — teardown cleans up all created resources.
+# E2E resources are deployed to the `privilegedescalation-dev` namespace. Nothing
+# persists beyond the test run — teardown cleans up all created resources.
 #
 # Prerequisites:
 #   - Plugin built (dist/ exists with plugin-main.js + package.json)
@@ -15,7 +15,7 @@
 #   - RBAC applied: kubectl apply -f deployment/e2e-ci-runner-rbac.yaml
 #
 # Environment:
-#   E2E_NAMESPACE     — namespace for E2E Headlamp (default: default)
+#   E2E_NAMESPACE     — namespace for E2E Headlamp (default: privilegedescalation-dev)
 #   E2E_RELEASE       — Helm release name (default: headlamp-e2e)
 #   HEADLAMP_VERSION  — Headlamp image tag (default: latest)
 set -euo pipefail
@@ -23,7 +23,7 @@ set -euo pipefail
 REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 DIST_DIR="$REPO_ROOT/dist"
 
-E2E_NAMESPACE="${E2E_NAMESPACE:-default}"
+E2E_NAMESPACE="${E2E_NAMESPACE:-privilegedescalation-dev}"
 E2E_RELEASE="${E2E_RELEASE:-headlamp-e2e}"
 HEADLAMP_VERSION="${HEADLAMP_VERSION:-latest}"
 
diff --git a/scripts/teardown-e2e-headlamp.sh b/scripts/teardown-e2e-headlamp.sh
index b936851..cf310cf 100755
--- a/scripts/teardown-e2e-headlamp.sh
+++ b/scripts/teardown-e2e-headlamp.sh
@@ -4,13 +4,13 @@
 # Tears down the dedicated E2E Headlamp instance deployed by deploy-e2e-headlamp.sh.
 #
 # Environment:
-#   E2E_NAMESPACE  — namespace to clean up (default: default)
+#   E2E_NAMESPACE  — namespace to clean up (default: privilegedescalation-dev)
 #   E2E_RELEASE    — Helm release to uninstall (default: headlamp-e2e)
 set -euo pipefail
 
 REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 
-E2E_NAMESPACE="${E2E_NAMESPACE:-default}"
+E2E_NAMESPACE="${E2E_NAMESPACE:-privilegedescalation-dev}"
 E2E_RELEASE="${E2E_RELEASE:-headlamp-e2e}"
 
 echo "=== E2E Headlamp Teardown ==="