diff --git a/tests/UnifiedSpecTests/EventObserver.php b/tests/UnifiedSpecTests/EventObserver.php
index 651d21b2d..842dfb89a 100644
--- a/tests/UnifiedSpecTests/EventObserver.php
+++ b/tests/UnifiedSpecTests/EventObserver.php
@@ -262,7 +262,7 @@ private function assertEvent($actual, stdClass $expected, string $message)
 
     private function assertCommandStartedEvent(CommandStartedEvent $actual, stdClass $expected, string $message): void
     {
-        Util::assertHasOnlyKeys($expected, ['command', 'commandName', 'databaseName', 'hasServiceId']);
+        Util::assertHasOnlyKeys($expected, ['command', 'commandName', 'databaseName', 'hasServiceId', 'hasServerConnectionId']);
 
         if (isset($expected->command)) {
             assertIsObject($expected->command);
@@ -284,11 +284,16 @@ private function assertCommandStartedEvent(CommandStartedEvent $actual, stdClass
             assertIsBool($expected->hasServiceId);
             assertSame($actual->getServiceId() !== null, $expected->hasServiceId, $message . ': hasServiceId matches');
         }
+
+        if (isset($expected->hasServerConnectionId)) {
+            assertIsBool($expected->hasServerConnectionId);
+            assertSame($actual->getServerConnectionId() !== null, $expected->hasServerConnectionId, $message . ': hasServerConnectionId matches');
+        }
     }
 
     private function assertCommandSucceededEvent(CommandSucceededEvent $actual, stdClass $expected, string $message): void
     {
-        Util::assertHasOnlyKeys($expected, ['reply', 'commandName', 'hasServiceId']);
+        Util::assertHasOnlyKeys($expected, ['reply', 'commandName', 'hasServiceId', 'hasServerConnectionId']);
 
         if (isset($expected->reply)) {
             assertIsObject($expected->reply);
@@ -305,11 +310,16 @@ private function assertCommandSucceededEvent(CommandSucceededEvent $actual, stdC
             assertIsBool($expected->hasServiceId);
             assertSame($actual->getServiceId() !== null, $expected->hasServiceId, $message . ': hasServiceId matches');
         }
+
+        if (isset($expected->hasServerConnectionId)) {
+            assertIsBool($expected->hasServerConnectionId);
+            assertSame($actual->getServerConnectionId() !== null, $expected->hasServerConnectionId, $message . ': hasServerConnectionId matches');
+        }
     }
 
     private function assertCommandFailedEvent(CommandFailedEvent $actual, stdClass $expected, string $message): void
     {
-        Util::assertHasOnlyKeys($expected, ['commandName', 'hasServiceId']);
+        Util::assertHasOnlyKeys($expected, ['commandName', 'hasServiceId', 'hasServerConnectionId']);
 
         if (isset($expected->commandName)) {
             assertIsString($expected->commandName);
@@ -320,6 +330,11 @@ private function assertCommandFailedEvent(CommandFailedEvent $actual, stdClass $
             assertIsBool($expected->hasServiceId);
             assertSame($actual->getServiceId() !== null, $expected->hasServiceId, $message . ': hasServiceId matches');
         }
+
+        if (isset($expected->hasServerConnectionId)) {
+            assertIsBool($expected->hasServerConnectionId);
+            assertSame($actual->getServerConnectionId() !== null, $expected->hasServerConnectionId, $message . ': hasServerConnectionId matches');
+        }
     }
 
     /** @param CommandStartedEvent|CommandSucceededEvent|CommandFailedEvent $event */
diff --git a/tests/UnifiedSpecTests/UnifiedSpecTest.php b/tests/UnifiedSpecTests/UnifiedSpecTest.php
index 5db237cbb..80b531255 100644
--- a/tests/UnifiedSpecTests/UnifiedSpecTest.php
+++ b/tests/UnifiedSpecTests/UnifiedSpecTest.php
@@ -59,9 +59,6 @@ class UnifiedSpecTest extends FunctionalTestCase
         'valid-pass/entity-client-cmap-events: events are captured during an operation' => 'PHPC does not implement CMAP',
         'valid-pass/expectedEventsForClient-eventType: eventType can be set to command and cmap' => 'PHPC does not implement CMAP',
         'valid-pass/expectedEventsForClient-eventType: eventType defaults to command if unset' => 'PHPC does not implement CMAP',
-        // Command monitoring event serverConnectionId is not yet implemented
-        'command-monitoring/pre-42-server-connection-id: command events do not include server connection id' => 'Not yet implemented (PHPC-1899, PHPLIB-718)',
-        'command-monitoring/server-connection-id: command events include server connection id' => 'Not yet implemented (PHPC-1899, PHPLIB-718)',
         // Change stream "comment" option is not yet implemented
         'change-streams/change-streams: Test with document comment' => 'Not yet implemented (PHPLIB-749)',
         'change-streams/change-streams: Test with document comment - pre 4.4' => 'Not yet implemented (PHPLIB-749)',
diff --git a/tests/UnifiedSpecTests/UnifiedTestRunner.php b/tests/UnifiedSpecTests/UnifiedTestRunner.php
index 5a2718223..a378f7996 100644
--- a/tests/UnifiedSpecTests/UnifiedTestRunner.php
+++ b/tests/UnifiedSpecTests/UnifiedTestRunner.php
@@ -60,7 +60,6 @@ final class UnifiedTestRunner
 
     public const MIN_SCHEMA_VERSION = '1.0';
 
-    // Note: schema version 1.6 is not yet implemented (see: PHPLIB-718)
     public const MAX_SCHEMA_VERSION = '1.7';
 
     /** @var MongoDB\Client */