diff --git a/src/Symfony/Bridge/Doctrine/composer.json b/src/Symfony/Bridge/Doctrine/composer.json
index 8017af5acf..2bf139f55a 100644
--- a/src/Symfony/Bridge/Doctrine/composer.json
+++ b/src/Symfony/Bridge/Doctrine/composer.json
@@ -35,7 +35,7 @@
         "symfony/proxy-manager-bridge": "^3.4|^4.0|^5.0",
         "symfony/security-core": "^4.4|^5.0",
         "symfony/expression-language": "^3.4|^4.0|^5.0",
-        "symfony/validator": "^3.4|^4.0|^5.0",
+        "symfony/validator": "^3.4.31|^4.3.4|^5.0",
         "symfony/translation": "^3.4|^4.0|^5.0",
         "doctrine/annotations": "~1.0",
         "doctrine/cache": "~1.6",
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
index 4113c69414..3fede26b80 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
@@ -1288,8 +1288,8 @@ class ContainerBuilderTest extends TestCase
 
     public function testNoClassFromNamespaceClassIdWithLeadingSlash()
     {
-        $this->expectException('Symfony\Component\DependencyInjection\Exception\RuntimeException');
-        $this->expectExceptionMessage('The definition for "\Symfony\Component\DependencyInjection\Tests\FooClass" has no class attribute, and appears to reference a class or interface. Please specify the class attribute explicitly or remove the leading backslash by renaming the service to "Symfony\Component\DependencyInjection\Tests\FooClass" to get rid of this error.');
+        $this->expectException('Symfony\Component\DependencyInjection\Exception\InvalidArgumentException');
+        $this->expectExceptionMessage('Service definition "\Symfony\Component\DependencyInjection\Tests\FooClass" has no class, and its name looks like a FQCN but it starts with a backslash; remove the leading backslash.');
         $container = new ContainerBuilder();
 
         $container->register('\\'.FooClass::class);
diff --git a/src/Symfony/Component/DependencyInjection/composer.json b/src/Symfony/Component/DependencyInjection/composer.json
index 22254796c4..008644b19d 100644
--- a/src/Symfony/Component/DependencyInjection/composer.json
+++ b/src/Symfony/Component/DependencyInjection/composer.json
@@ -18,7 +18,7 @@
     "require": {
         "php": "^7.1.3",
         "psr/container": "^1.0",
-        "symfony/service-contracts": "^1.1.2"
+        "symfony/service-contracts": "^1.1.6"
     },
     "require-dev": {
         "symfony/yaml": "^3.4|^4.0|^5.0",
diff --git a/src/Symfony/Component/Form/composer.json b/src/Symfony/Component/Form/composer.json
index e254a2b754..d81b150e91 100644
--- a/src/Symfony/Component/Form/composer.json
+++ b/src/Symfony/Component/Form/composer.json
@@ -27,7 +27,7 @@
     },
     "require-dev": {
         "doctrine/collections": "~1.0",
-        "symfony/validator": "^3.4|^4.0|^5.0",
+        "symfony/validator": "^3.4.31|^4.3.4|^5.0",
         "symfony/dependency-injection": "^3.4|^4.0|^5.0",
         "symfony/config": "^3.4|^4.0|^5.0",
         "symfony/console": "^4.3|^5.0",
diff --git a/src/Symfony/Component/Security/Core/composer.json b/src/Symfony/Component/Security/Core/composer.json
index 9819a096ae..8b8087bc2b 100644
--- a/src/Symfony/Component/Security/Core/composer.json
+++ b/src/Symfony/Component/Security/Core/composer.json
@@ -26,7 +26,7 @@
         "symfony/expression-language": "^3.4|^4.0|^5.0",
         "symfony/http-foundation": "^3.4|^4.0|^5.0",
         "symfony/ldap": "^4.4|^5.0",
-        "symfony/validator": "^3.4|^4.0|^5.0",
+        "symfony/validator": "^3.4.31|^4.3.4|^5.0",
         "psr/log": "~1.0"
     },
     "conflict": {
diff --git a/src/Symfony/Component/Security/composer.json b/src/Symfony/Component/Security/composer.json
index a08ed207b1..01b913a757 100644
--- a/src/Symfony/Component/Security/composer.json
+++ b/src/Symfony/Component/Security/composer.json
@@ -35,7 +35,7 @@
         "symfony/polyfill-ctype": "~1.8",
         "symfony/polyfill-intl-icu": "~1.0",
         "symfony/routing": "^3.4|^4.0|^5.0",
-        "symfony/validator": "^3.4|^4.0|^5.0",
+        "symfony/validator": "^3.4.31|^4.3.4|^5.0",
         "symfony/expression-language": "^3.4|^4.0|^5.0",
         "symfony/ldap": "^4.4|^5.0",
         "psr/log": "~1.0"
diff --git a/src/Symfony/Component/Translation/composer.json b/src/Symfony/Component/Translation/composer.json
index f390623efe..11e8d415ed 100644
--- a/src/Symfony/Component/Translation/composer.json
+++ b/src/Symfony/Component/Translation/composer.json
@@ -18,7 +18,7 @@
     "require": {
         "php": "^7.1.3",
         "symfony/polyfill-mbstring": "~1.0",
-        "symfony/translation-contracts": "^1.1.2"
+        "symfony/translation-contracts": "^1.1.6"
     },
     "require-dev": {
         "symfony/config": "^3.4|^4.0|^5.0",