diff --git a/doc/source/reference/vulnerabilities.rst b/doc/source/reference/vulnerabilities.rst
index d419296553..09e719feaa 100644
--- a/doc/source/reference/vulnerabilities.rst
+++ b/doc/source/reference/vulnerabilities.rst
@@ -62,7 +62,7 @@ fingerprints:
   `key 0xfb2ee15b2f0f12662b68ed9603750dec158e5fa2`_ (details__)
 
 .. _`key 0x97ae496fc02dec9fc353b2e748f9961143495829`: ../_static/0x97ae496fc02dec9fc353b2e748f9961143495829.txt
-.. __: https://sks-keyservers.net/pks/lookup?op=vindex&search=0x97ae496fc02dec9fc353b2e748f9961143495829&fingerprint=on
+.. __: http://pool.sks-keyservers.net:11371/pks/lookup?op=vindex&search=0x97ae496fc02dec9fc353b2e748f9961143495829&fingerprint=on
 
 .. _`key 0xfb2ee15b2f0f12662b68ed9603750dec158e5fa2`: ../_static/0xfb2ee15b2f0f12662b68ed9603750dec158e5fa2.txt
-.. __: https://sks-keyservers.net/pks/lookup?op=vindex&search=0xfb2ee15b2f0f12662b68ed9603750dec158e5fa2&fingerprint=on
+.. __: http://pool.sks-keyservers.net:11371/pks/lookup?op=vindex&search=0xfb2ee15b2f0f12662b68ed9603750dec158e5fa2&fingerprint=on