diff --git a/gitlab/cli.py b/gitlab/cli.py
index c7dacebd0..181cc564e 100644
--- a/gitlab/cli.py
+++ b/gitlab/cli.py
@@ -41,6 +41,8 @@
                            'blob': {'required': ['id', 'project-id',
                                                  'filepath']},
                            'builds': {'required': ['id', 'project-id']}},
+    gitlab.ProjectIssue: {'subscribe': {'required': ['id', 'project-id']},
+                          'unsubscribe': {'required': ['id', 'project-id']}},
     gitlab.ProjectMergeRequest: {
         'closes-issues': {'required': ['id', 'project-id']},
         'cancel': {'required': ['id', 'project-id']},
@@ -248,6 +250,20 @@ def do_project_build_retry(self, cls, gl, what, args):
         except Exception as e:
             _die("Impossible to retry project build (%s)" % str(e))
 
+    def do_project_issue_subscribe(self, cls, gl, what, args):
+        try:
+            o = self.do_get(cls, gl, what, args)
+            o.subscribe()
+        except Exception as e:
+            _die("Impossible to subscribe to issue (%s)" % str(e))
+
+    def do_project_issue_unsubscribe(self, cls, gl, what, args):
+        try:
+            o = self.do_get(cls, gl, what, args)
+            o.unsubscribe()
+        except Exception as e:
+            _die("Impossible to subscribe to issue (%s)" % str(e))
+
     def do_project_merge_request_closesissues(self, cls, gl, what, args):
         try:
             o = self.do_get(cls, gl, what, args)
diff --git a/gitlab/objects.py b/gitlab/objects.py
index a865ad4dc..313ed964e 100644
--- a/gitlab/objects.py
+++ b/gitlab/objects.py
@@ -999,6 +999,12 @@ def Note(self, id=None, **kwargs):
                                                     **kwargs)
 
     def subscribe(self, **kwargs):
+        """Subscribe to an issue.
+
+        Raises:
+            GitlabConnectionError: If the server cannot be reached.
+            GitlabSubscribeError: If the subscription cannot be done
+        """
         url = ('/projects/%(project_id)s/issues/%(issue_id)s/subscription' %
                {'project_id': self.project_id, 'issue_id': self.id})
 
@@ -1007,6 +1013,12 @@ def subscribe(self, **kwargs):
         self._set_from_dict(r.json())
 
     def unsubscribe(self, **kwargs):
+        """Unsubscribe an issue.
+
+        Raises:
+            GitlabConnectionError: If the server cannot be reached.
+            GitlabSubscribeError: If the unsubscription cannot be done
+        """
         url = ('/projects/%(project_id)s/issues/%(issue_id)s/subscription' %
                {'project_id': self.project_id, 'issue_id': self.id})