diff --git a/src/LIBMONGOC_VERSION_CURRENT b/src/LIBMONGOC_VERSION_CURRENT
index 0c120c28f..815d5ca06 100644
--- a/src/LIBMONGOC_VERSION_CURRENT
+++ b/src/LIBMONGOC_VERSION_CURRENT
@@ -1 +1 @@
-1.11.1-20210804+git230369cd07
+1.19.0
diff --git a/src/libmongoc b/src/libmongoc
index 230369cd0..2ff367a5b 160000
--- a/src/libmongoc
+++ b/src/libmongoc
@@ -1 +1 @@
-Subproject commit 230369cd070d800545b0c91fd47e1537a50ce6ca
+Subproject commit 2ff367a5b6473b3f0dd93b833c530af0db5a0424
diff --git a/tests/manager/manager-ctor-auth_mechanism-error-001.phpt b/tests/manager/manager-ctor-auth_mechanism-error-001.phpt
index 80866e65b..a98783e7f 100644
--- a/tests/manager/manager-ctor-auth_mechanism-error-001.phpt
+++ b/tests/manager/manager-ctor-auth_mechanism-error-001.phpt
@@ -33,10 +33,7 @@ echo throws(function() {
     create_test_manager('mongodb://localhost:27017/', ['password' => 'password', 'authMechanism' => 'MONGODB-X509']);
 }, "MongoDB\Driver\Exception\InvalidArgumentException"), "\n";
 
-echo throws(function() {
-    create_test_manager('mongodb://localhost:27017/?authSource=foo');
-}, "MongoDB\Driver\Exception\InvalidArgumentException"), "\n";
-
+// TODO: This test case should be removed by PHPC-1950
 echo throws(function() {
     create_test_manager('mongodb://localhost:27017/', ['authSource' => 'foo']);
 }, "MongoDB\Driver\Exception\InvalidArgumentException"), "\n";
@@ -60,7 +57,5 @@ Failed to parse URI options: 'SCRAM-SHA-1' authentication mechanism requires use
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
 Failed to parse URI options: X509 authentication mechanism does not accept a password.
 OK: Got MongoDB\Driver\Exception\InvalidArgumentException
-Failed to parse MongoDB URI: 'mongodb://localhost:27017/?authSource=foo'. Default authentication mechanism requires username.
-OK: Got MongoDB\Driver\Exception\InvalidArgumentException
 Failed to parse URI options: Default authentication mechanism requires username.
 ===DONE===