diff --git a/releasenotes/notes/fix-to-close-session-on-dealloc-c3687d4dcb1441b8.yaml b/releasenotes/notes/fix-to-close-session-on-dealloc-c3687d4dcb1441b8.yaml
new file mode 100644
index 00000000..df9fbfd5
--- /dev/null
+++ b/releasenotes/notes/fix-to-close-session-on-dealloc-c3687d4dcb1441b8.yaml
@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Tries to terminate authenticated Redfish session at BMC Session Service on
+    the event of ``Sushy`` object deallocation. This should reduce the chance
+    of authenticated sessions pool exhaustion at some BMCs.
diff --git a/sushy/main.py b/sushy/main.py
index 5f9e9fa9..364c147e 100644
--- a/sushy/main.py
+++ b/sushy/main.py
@@ -110,10 +110,21 @@ class Sushy(base.ResourceBase):
         super(Sushy, self).__init__(
             connector or sushy_connector.Connector(base_url, verify=verify),
             path=self._root_prefix)
+        self._base_url = base_url
         self._auth = auth
         self._auth.set_context(self, self._conn)
         self._auth.authenticate()
 
+    def __del__(self):
+        if self._auth:
+            try:
+                self._auth.close()
+
+            except Exception as ex:
+                LOG.warning('Ignoring error while closing Redfish session '
+                            'with %s: %s', self._base_url, ex)
+            self._auth = None
+
     def _parse_attributes(self):
         super(Sushy, self)._parse_attributes()
         self.redfish_version = self.json.get('RedfishVersion')