diff --git a/github/Deployment.py b/github/Deployment.py
index ae7472bb..2c658e76 100644
--- a/github/Deployment.py
+++ b/github/Deployment.py
@@ -43,6 +43,14 @@ class Deployment(github.GithubObject.CompletableGithubObject):
         self._completeIfNotSet(self._id)
         return self._id.value
 
+    @property
+    def ref(self):
+        """
+        :type: string
+        """
+        self._completeIfNotSet(self._ref)
+        return self._ref.value
+
     @property
     def url(self):
         """
@@ -254,6 +262,7 @@ class Deployment(github.GithubObject.CompletableGithubObject):
     def _initAttributes(self):
         self._id = github.GithubObject.NotSet
         self._production_environment = github.GithubObject.NotSet
+        self._ref = github.GithubObject.NotSet
         self._transient_environment = github.GithubObject.NotSet
         self._url = github.GithubObject.NotSet
         self._sha = github.GithubObject.NotSet
@@ -275,6 +284,8 @@ class Deployment(github.GithubObject.CompletableGithubObject):
             self._production_environment = self._makeBoolAttribute(
                 attributes["production_environment"]
             )
+        if "ref" in attributes:  # pragma no branch
+            self._ref = self._makeStringAttribute(attributes["ref"])
         if "transient_environment" in attributes:  # pragma no branch
             self._transient_environment = self._makeBoolAttribute(
                 attributes["transient_environment"]
diff --git a/github/Deployment.pyi b/github/Deployment.pyi
index d3f34283..9d7cfa49 100644
--- a/github/Deployment.pyi
+++ b/github/Deployment.pyi
@@ -30,6 +30,8 @@ class Deployment(CompletableGithubObject):
     @property
     def sha(self) -> str: ...
     @property
+    def ref(self) -> str: ...
+    @property
     def task(self) -> str: ...
     @property
     def payload(self) -> Dict[str, Any]: ...
diff --git a/tests/Deployment.py b/tests/Deployment.py
index b0c2fbcb..5ab757e1 100644
--- a/tests/Deployment.py
+++ b/tests/Deployment.py
@@ -39,6 +39,9 @@ class Deployment(Framework.TestCase):
             self.deployment.url,
             "https://api.github.com/repos/jacquev6/PyGithub/deployments/263877258",
         )
+        self.assertEqual(
+            self.deployment.ref, "743f5a58b0bce91c4eab744ff7e39dfca9e6e8a5"
+        )
         self.assertEqual(
             self.deployment.sha, "743f5a58b0bce91c4eab744ff7e39dfca9e6e8a5"
         )