diff --git a/src/Command/CodeCheckerCommand.php b/src/Command/CodeCheckerCommand.php
index caac0f5b..f40729d5 100644
--- a/src/Command/CodeCheckerCommand.php
+++ b/src/Command/CodeCheckerCommand.php
@@ -39,7 +39,9 @@ protected function configure(): void
             ->setDescription('Run Moodle CodeSniffer standard on a plugin')
             ->addOption('standard', 's', InputOption::VALUE_REQUIRED, 'The name or path of the coding standard to use', 'moodle')
             ->addOption('max-warnings', null, InputOption::VALUE_REQUIRED,
-                'Number of warnings to trigger nonzero exit code - default: -1', -1);
+                'Number of warnings to trigger nonzero exit code - default: -1', -1)
+            ->addOption('testVersion', null, InputOption::VALUE_REQUIRED,
+                'Version or range of version to test with PHPCompatibility', 0);
     }
 
     protected function initialize(InputInterface $input, OutputInterface $output): void
@@ -82,6 +84,12 @@ protected function execute(InputInterface $input, OutputInterface $output): int
             $cmd[] = '--report-json=' . $this->tempFile;
         }
 
+        // Show PHPCompatibility backward-compatibility errors for a version or version range.
+        $testVersion = $input->getOption('testVersion');
+        if (!empty($testVersion)) {
+            array_push($cmd, '--runtime-set', 'testVersion', $testVersion);
+        }
+
         // Add the files to process.
         foreach ($files as $file) {
             $cmd[] = $file;