diff --git a/README.md b/README.md
index b6ea063a..52383326 100644
--- a/README.md
+++ b/README.md
@@ -1043,6 +1043,7 @@ Input:
 - (optional) `mailbox_id` in request body
 - (optional) `name` in request body
 - (optional) `mailbox_ids` in request body: array of mailbox_id
+- (optional) `disable_pgp` in request body: boolean
 
 Output:
 If success, return 200
diff --git a/app/api/views/alias.py b/app/api/views/alias.py
index db7cb9ac..cb11f375 100644
--- a/app/api/views/alias.py
+++ b/app/api/views/alias.py
@@ -257,6 +257,7 @@ def update_alias(alias_id):
         note (optional): in body
         name (optional): in body
         mailbox_id (optional): in body
+        disable_pgp (optional): in body
     Output:
         200
     """
@@ -319,6 +320,10 @@ def update_alias(alias_id):
         alias.name = new_name
         changed = True
 
+    if "disable_pgp" in data:
+        alias.disable_pgp = data.get("disable_pgp")
+        changed = True
+
     if changed:
         db.session.commit()
 
diff --git a/tests/api/test_alias.py b/tests/api/test_alias.py
index 9ee1217f..3d2eaf92 100644
--- a/tests/api/test_alias.py
+++ b/tests/api/test_alias.py
@@ -399,6 +399,31 @@ def test_update_alias_mailboxes(flask_client):
     assert r.status_code == 400
 
 
+def test_update_disable_pgp(flask_client):
+    user = User.create(
+        email="a@b.c", password="password", name="Test User", activated=True
+    )
+    db.session.commit()
+
+    # create api_key
+    api_key = ApiKey.create(user.id, "for test")
+    db.session.commit()
+
+    alias = Alias.create_new_random(user)
+    db.session.commit()
+    assert not alias.disable_pgp
+
+    r = flask_client.put(
+        url_for("api.update_alias", alias_id=alias.id),
+        headers={"Authentication": api_key.code},
+        json={"disable_pgp": True},
+    )
+
+    assert r.status_code == 200
+    alias = Alias.get(alias.id)
+    assert alias.disable_pgp
+
+
 def test_alias_contacts(flask_client):
     user = User.create(
         email="a@b.c", password="password", name="Test User", activated=True