diff --git a/airflow/providers/cncf/kubernetes/operators/kubernetes_pod.py b/airflow/providers/cncf/kubernetes/operators/kubernetes_pod.py
index 7e6cef2b5a4..32ce4dc0ace 100644
--- a/airflow/providers/cncf/kubernetes/operators/kubernetes_pod.py
+++ b/airflow/providers/cncf/kubernetes/operators/kubernetes_pod.py
@@ -172,7 +172,7 @@ class KubernetesPodOperator(BaseOperator):
         'pod_template_file',
     )
 
-    template_ext = ('yaml', 'yml', 'json')
+    template_ext = ('.yaml', '.yml', '.json')
 
     # fmt: off
     def __init__(
diff --git a/airflow/providers/cncf/kubernetes/operators/spark_kubernetes.py b/airflow/providers/cncf/kubernetes/operators/spark_kubernetes.py
index 1e1fa5fbd69..ef338540031 100644
--- a/airflow/providers/cncf/kubernetes/operators/spark_kubernetes.py
+++ b/airflow/providers/cncf/kubernetes/operators/spark_kubernetes.py
@@ -43,7 +43,7 @@ class SparkKubernetesOperator(BaseOperator):
     """
 
     template_fields = ['application_file', 'namespace']
-    template_ext = ('yaml', 'yml', 'json')
+    template_ext = ('.yaml', '.yml', '.json')
     ui_color = '#f4a460'
 
     def __init__(