diff --git a/src/Symfony/Bridge/Twig/CHANGELOG.md b/src/Symfony/Bridge/Twig/CHANGELOG.md
index 7227605312..c37b0f0f15 100644
--- a/src/Symfony/Bridge/Twig/CHANGELOG.md
+++ b/src/Symfony/Bridge/Twig/CHANGELOG.md
@@ -7,6 +7,7 @@ CHANGELOG
  * removed `TwigEngine` class, use `\Twig\Environment` instead.
  * removed `transChoice` filter and token
  * `HttpFoundationExtension` requires a `UrlHelper` on instantiation
+ * removed support for implicit STDIN usage in the `lint:twig` command, use `lint:twig -` (append a dash) instead to make it explicit.
 
 4.4.0
 -----
diff --git a/src/Symfony/Bridge/Twig/Command/LintCommand.php b/src/Symfony/Bridge/Twig/Command/LintCommand.php
index 3e76b36dfa..90955f8dba 100644
--- a/src/Symfony/Bridge/Twig/Command/LintCommand.php
+++ b/src/Symfony/Bridge/Twig/Command/LintCommand.php
@@ -77,17 +77,12 @@ EOF
     {
         $io = new SymfonyStyle($input, $output);
         $filenames = $input->getArgument('filename');
-        $hasStdin = '-' === ($filenames[0] ?? '');
 
-        if ($hasStdin || 0 === \count($filenames)) {
-            if ($hasStdin || 0 === ftell(STDIN)) { // remove 0 === ftell(STDIN) check in 5.0
-                if (!$hasStdin) {
-                    @trigger_error('Calling to the "lint:twig" command providing pipe file content to STDIN without passing the dash symbol "-" explicitly is deprecated since Symfony 4.4.', E_USER_DEPRECATED);
-                }
-
-                return $this->display($input, $output, $io, [$this->validate($this->getStdin(), uniqid('sf_', true))]);
-            }
+        if ('-' === ($filenames[0] ?? '')) {
+            return $this->display($input, $output, $io, [$this->validate($this->getStdin(), uniqid('sf_', true))]);
+        }
 
+        if (0 === \count($filenames)) {
             $loader = $this->twig->getLoader();
             if ($loader instanceof FilesystemLoader) {
                 $paths = [];
diff --git a/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php b/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
index 3ac46512f1..fe3a7231b4 100644
--- a/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
+++ b/src/Symfony/Bridge/Twig/Tests/Command/LintCommandTest.php
@@ -66,9 +66,6 @@ class LintCommandTest extends TestCase
         $this->assertRegExp('/ERROR  in \S+ \(line /', trim($tester->getDisplay()));
     }
 
-    /**
-     * @group tty
-     */
     public function testLintDefaultPaths()
     {
         $tester = $this->createCommandTester();
diff --git a/src/Symfony/Component/Translation/CHANGELOG.md b/src/Symfony/Component/Translation/CHANGELOG.md
index 79d3a46e4e..3f3d81cd55 100644
--- a/src/Symfony/Component/Translation/CHANGELOG.md
+++ b/src/Symfony/Component/Translation/CHANGELOG.md
@@ -14,6 +14,7 @@ CHANGELOG
  * removed `FileDumper::setBackup()` and `TranslationWriter::disableBackup()`
  * removed `MessageFormatter::choiceFormat()`
  * added argument `$filename` to `PhpExtractor::parseTokens()`
+ * removed support for implicit STDIN usage in the `lint:xliff` command, use `lint:xliff -` (append a dash) instead to make it explicit.
 
 4.4.0
 -----
diff --git a/src/Symfony/Component/Translation/Command/XliffLintCommand.php b/src/Symfony/Component/Translation/Command/XliffLintCommand.php
index 8137415e99..c77c2fa556 100644
--- a/src/Symfony/Component/Translation/Command/XliffLintCommand.php
+++ b/src/Symfony/Component/Translation/Command/XliffLintCommand.php
@@ -83,20 +83,15 @@ EOF
         $filenames = (array) $input->getArgument('filename');
         $this->format = $input->getOption('format');
         $this->displayCorrectFiles = $output->isVerbose();
-        $hasStdin = '-' === ($filenames[0] ?? '');
-
-        if ($hasStdin || 0 === \count($filenames)) {
-            if (!$hasStdin && 0 !== ftell(STDIN)) { // remove 0 !== ftell(STDIN) check in 5.0
-                throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
-            }
-
-            if (!$hasStdin) {
-                @trigger_error('Calling to the "lint:xliff" command providing pipe file content to STDIN without passing the dash symbol "-" explicitly is deprecated since Symfony 4.4.', E_USER_DEPRECATED);
-            }
 
+        if ('-' === ($filenames[0] ?? '')) {
             return $this->display($io, [$this->validate($this->getStdin())]);
         }
 
+        if (0 === \count($filenames)) {
+            throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
+        }
+
         $filesInfo = [];
         foreach ($filenames as $filename) {
             if (!$this->isReadable($filename)) {
diff --git a/src/Symfony/Component/Yaml/CHANGELOG.md b/src/Symfony/Component/Yaml/CHANGELOG.md
index 0879b28a45..5627178c73 100644
--- a/src/Symfony/Component/Yaml/CHANGELOG.md
+++ b/src/Symfony/Component/Yaml/CHANGELOG.md
@@ -5,6 +5,7 @@ CHANGELOG
 -----
 
  * Removed support for mappings inside multi-line strings.
+ * removed support for implicit STDIN usage in the `lint:yaml` command, use `lint:yaml -` (append a dash) instead to make it explicit.
 
 4.4.0
 -----
diff --git a/src/Symfony/Component/Yaml/Command/LintCommand.php b/src/Symfony/Component/Yaml/Command/LintCommand.php
index 2f3193ba1d..32b2350dc9 100644
--- a/src/Symfony/Component/Yaml/Command/LintCommand.php
+++ b/src/Symfony/Component/Yaml/Command/LintCommand.php
@@ -86,20 +86,15 @@ EOF
         $this->format = $input->getOption('format');
         $this->displayCorrectFiles = $output->isVerbose();
         $flags = $input->getOption('parse-tags') ? Yaml::PARSE_CUSTOM_TAGS : 0;
-        $hasStdin = '-' === ($filenames[0] ?? '');
-
-        if ($hasStdin || 0 === \count($filenames)) {
-            if (!$hasStdin && 0 !== ftell(STDIN)) { // remove 0 !== ftell(STDIN) check in 5.0
-                throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
-            }
-
-            if (!$hasStdin) {
-                @trigger_error('Calling to the "lint:yaml" command providing pipe file content to STDIN without passing the dash symbol "-" explicitly is deprecated since Symfony 4.4.', E_USER_DEPRECATED);
-            }
 
+        if ('-' === ($filenames[0] ?? '')) {
             return $this->display($io, [$this->validate($this->getStdin(), $flags)]);
         }
 
+        if (0 === \count($filenames)) {
+            throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
+        }
+
         $filesInfo = [];
         foreach ($filenames as $filename) {
             if (!$this->isReadable($filename)) {