diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index 40bfe68c..517f6c10 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -156,6 +156,7 @@ class CompilerBase extends \PhpAot\Core\Translator
     protected int $maxJob = 4;
     protected string $buildMode = 'bin';
     protected string $cxxflags = '';
+    protected string $cxxStd = 'c++14';
     protected string $ldflags = '';
     protected int $floatPrecision = 17;
     protected bool $debugInfo = false;
@@ -2110,6 +2111,9 @@ class CompilerBase extends \PhpAot\Core\Translator
             if ($this->cxxflags) {
                 $cmd .= ' ' . $this->cxxflags;
             }
+            if (!str_contains($this->cxxflags, ' -std=')) {
+                $cmd .= ' -std=' . $this->cxxStd;
+            }
         }
     }