diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
index e5b15e88fff01..d02e85fe1a8d8 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
@@ -486,8 +486,6 @@ private function addWorkflowSection(ArrayNodeDefinition $rootNode): void
                                                 return array_values($places);
                                             })
                                         ->end()
-                                        ->isRequired()
-                                        ->requiresAtLeastOneElement()
                                         ->prototype('array')
                                             ->children()
                                                 ->scalarNode('name')
diff --git a/src/Symfony/Component/Workflow/CHANGELOG.md b/src/Symfony/Component/Workflow/CHANGELOG.md
index f8b83a59a9689..247d5e469b4a9 100644
--- a/src/Symfony/Component/Workflow/CHANGELOG.md
+++ b/src/Symfony/Component/Workflow/CHANGELOG.md
@@ -5,6 +5,7 @@ CHANGELOG
 ---
 
  * Add method `getEnabledTransition()` to `WorkflowInterface`
+ * Automatically register places from transitions
 
 7.0
 ---
diff --git a/src/Symfony/Component/Workflow/Definition.php b/src/Symfony/Component/Workflow/Definition.php
index 58456bbf14eed..96ec1fe548c70 100644
--- a/src/Symfony/Component/Workflow/Definition.php
+++ b/src/Symfony/Component/Workflow/Definition.php
@@ -104,17 +104,15 @@ private function addPlace(string $place): void
 
     private function addTransition(Transition $transition): void
     {
-        $name = $transition->getName();
-
         foreach ($transition->getFroms() as $from) {
-            if (!isset($this->places[$from])) {
-                throw new LogicException(sprintf('Place "%s" referenced in transition "%s" does not exist.', $from, $name));
+            if (!\array_key_exists($from, $this->places)) {
+                $this->addPlace($from);
             }
         }
 
         foreach ($transition->getTos() as $to) {
-            if (!isset($this->places[$to])) {
-                throw new LogicException(sprintf('Place "%s" referenced in transition "%s" does not exist.', $to, $name));
+            if (!\array_key_exists($to, $this->places)) {
+                $this->addPlace($to);
             }
         }
 
diff --git a/src/Symfony/Component/Workflow/Tests/DefinitionTest.php b/src/Symfony/Component/Workflow/Tests/DefinitionTest.php
index 3dc40dd5634de..4303deeb952c8 100644
--- a/src/Symfony/Component/Workflow/Tests/DefinitionTest.php
+++ b/src/Symfony/Component/Workflow/Tests/DefinitionTest.php
@@ -66,19 +66,15 @@ public function testAddTransitionAndFromPlaceIsNotDefined()
     {
         $places = range('a', 'b');
 
-        $this->expectException(LogicException::class);
-        $this->expectExceptionMessage('Place "c" referenced in transition "name" does not exist.');
-
-        new Definition($places, [new Transition('name', 'c', $places[1])]);
+        $definition = new Definition($places, [new Transition('name', 'c', $places[1])]);
+        $this->assertContains('c', $definition->getPlaces());
     }
 
     public function testAddTransitionAndToPlaceIsNotDefined()
     {
         $places = range('a', 'b');
 
-        $this->expectException(LogicException::class);
-        $this->expectExceptionMessage('Place "c" referenced in transition "name" does not exist.');
-
-        new Definition($places, [new Transition('name', $places[0], 'c')]);
+        $definition = new Definition($places, [new Transition('name', $places[0], 'c')]);
+        $this->assertContains('c', $definition->getPlaces());
     }
 }