diff --git a/infra/k8s/gitlab/runner-rl-values.yaml b/infra/k8s/gitlab/runner-rl-values.yaml
index 9b2d9e048..fb0cbf79d 100644
--- a/infra/k8s/gitlab/runner-rl-values.yaml
+++ b/infra/k8s/gitlab/runner-rl-values.yaml
@@ -40,8 +40,8 @@ runners:
         memory_request_overwrite_max_allowed = "48Gi"
         memory_limit_overwrite_max_allowed = "48Gi"
         poll_timeout = 600
-        # Allow CI jobs to override runtimeClassName via KUBERNETES_RUNTIME_CLASS_NAME
-        runtime_class_name_overwrite_allowed = ".*"
+        # All RL runner jobs target GPU nodes → set nvidia runtime globally
+        runtime_class_name = "nvidia"
         # Default resources for RL training on L40S
         cpu_request = "2000m"
         cpu_limit = "3800m"