diff --git a/providers/singularity/src/airflow/providers/singularity/operators/singularity.py b/providers/singularity/src/airflow/providers/singularity/operators/singularity.py
index bee538c02077f..b527e61a5bd21 100644
--- a/providers/singularity/src/airflow/providers/singularity/operators/singularity.py
+++ b/providers/singularity/src/airflow/providers/singularity/operators/singularity.py
@@ -88,7 +88,7 @@ def __init__(
         self.environment = environment or {}
         self.force_pull = force_pull
         self.image = image
-        self.instance = None
+        self.instance: Any = None
         self.options = options or []
         self.pull_folder = pull_folder
         self.volumes = volumes or []
@@ -140,8 +140,8 @@ def execute(self, context: Context) -> None:
             self.image, options=self.options, args=self.start_command, start=False
         )
 
-        self.instance.start()  # type: ignore[attr-defined]
-        self.log.info(self.instance.cmd)  # type: ignore[attr-defined]
+        self.instance.start()
+        self.log.info(self.instance.cmd)
         self.log.info("Created instance %s from %s", self.instance, self.image)
 
         self.log.info("Running command %s", self._get_command())
@@ -152,7 +152,7 @@ def execute(self, context: Context) -> None:
 
         # Stop the instance
         self.log.info("Stopping instance %s", self.instance)
-        self.instance.stop()  # type: ignore[attr-defined]
+        self.instance.stop()
 
         if self.auto_remove and os.path.exists(self.image):
             shutil.rmtree(self.image)