diff --git a/app/pgp.py b/app/pgp.py
index 8404319..108576a 100644
--- a/app/pgp.py
+++ b/app/pgp.py
@@ -22,7 +22,7 @@ class Signature(NamedTuple):
 
     @property
     def url(self) -> str:
-        return "http://pool.sks-keyservers.net/pks/lookup?op=vindex&fingerprint=on&search=0x" + self.keyid
+        return "https://keyserver.ubuntu.com/pks/lookup?op=vindex&fingerprint=on&search=0x" + self.keyid
 
     @property
     def name(self) -> str:
diff --git a/tests/test_main.py b/tests/test_main.py
index 7b36b44..ff0fa53 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -74,7 +74,7 @@ def test_pgp():
     assert sig.keyid == "5f92efc1a47d45a1"
     assert sig.date == datetime.datetime(2020, 2, 24, 9, 35, 35)
     assert sig.name == "Alexey Pavlov"
-    assert sig.url == "http://pool.sks-keyservers.net/pks/lookup?op=vindex&fingerprint=on&search=0x5f92efc1a47d45a1"
+    assert sig.url == "https://keyserver.ubuntu.com/pks/lookup?op=vindex&fingerprint=on&search=0x5f92efc1a47d45a1"
 
 
 def test_parse_packager():