symfony
diff --git a/‎src/Symfony/Component/Process/CHANGELOG.md
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+5 b/‎src/Symfony/Component/Process/CHANGELOG.md
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+5
diff --git a/‎src/Symfony/Component/Process/Process.php
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+12-2 b/‎src/Symfony/Component/Process/Process.php
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+12-2
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+5.4
+---
+
+ * added support for `Fiber`
+
 5.2.0
 -----
 
 
@@ -427,12 +427,22 @@ public function wait(callable $callback = null)
         do {
             $this->checkTimeout();
             $running = '\\' === \DIRECTORY_SEPARATOR ? $this->isRunning() : $this->processPipes->areOpen();
-            $this->readPipes($running, '\\' !== \DIRECTORY_SEPARATOR || !$running);
+
+            if (\PHP_VERSION_ID >= 80100 && \Fiber::getCurrent()) {
+                $this->readPipes(false, '\\' !== \DIRECTORY_SEPARATOR || !$running);
+                \Fiber::suspend();
+            } else {
+                $this->readPipes($running, '\\' !== \DIRECTORY_SEPARATOR || !$running);
+            }
         } while ($running);
 
         while ($this->isRunning()) {
             $this->checkTimeout();
-            usleep(1000);
+            if (\PHP_VERSION_ID >= 80100 && \Fiber::getCurrent()) {
+                \Fiber::suspend();
+            } else {
+                usleep(1000);
+            }
         }
 
         if ($this->processInformation['signaled'] && $this->processInformation['termsig'] !== $this->latestSignal) {