diff --git a/src/Mjml.php b/src/Mjml.php
index 0d4a32c..1f498cc 100755
--- a/src/Mjml.php
+++ b/src/Mjml.php
@@ -138,6 +138,9 @@ public function convert(string $mjml, array $options = []): MjmlResult
             ? $this->getSideCarResult($arguments)
             : $this->getLocalResult($arguments);
 
+
+        $resultString = $this->checkForDeprecationWarning($resultString);
+
         $resultProperties = json_decode($resultString, true);
 
         if (array_key_exists('mjmlError', $resultProperties)) {
@@ -147,6 +150,17 @@ public function convert(string $mjml, array $options = []): MjmlResult
         return new MjmlResult($resultProperties);
     }
 
+    protected function checkForDeprecationWarning(string $result): string
+    {
+        $deprecationWarning = 'MJML v3 syntax detected, migrating to MJML v4 syntax. Use mjml -m to get the migrated MJML.';
+
+        if (str_contains($result, $deprecationWarning)) {
+            $result = str_replace($deprecationWarning, '', $result);
+        }
+
+        return $result;
+    }
+
     protected function getCommand(array $arguments): array
     {
         return [
diff --git a/tests/MjmlTest.php b/tests/MjmlTest.php
index 483740b..be6cd83 100644
--- a/tests/MjmlTest.php
+++ b/tests/MjmlTest.php
@@ -100,6 +100,14 @@
     Mjml::new()->sidecar()->toHtml(mjmlSnippet());
 })->throws(SidecarPackageUnavailable::class);
 
+it('can determine if the given mjml can be converted when the mjml is deprecated', function (string $mjml, bool $expectedResult) {
+    expect(Mjml::new()->canConvert($mjml))->toBe($expectedResult);
+})->with([
+    ['<mjml><mj-body></mj-body></mjml>', true],
+    ['<mjml><mj-body><mj-container></mj-container></mj-body></mjml>', false], // deprecated mjml
+    ['<mjml><mj-body><mj-wrapper></mj-wrapper></mj-body></mjml>', true],
+]);
+
 function mjmlSnippet(): string
 {
     return <<<'MJML'