diff -u b/core/modules/workflows/src/Form/WorkflowTransitionEditForm.php b/core/modules/workflows/src/Form/WorkflowTransitionEditForm.php
--- b/core/modules/workflows/src/Form/WorkflowTransitionEditForm.php
+++ b/core/modules/workflows/src/Form/WorkflowTransitionEditForm.php
@@ -120,6 +120,7 @@
     $form_state->set('created_transition', FALSE);
     $entity->setTransitionLabel($values['id'], $values['label']);
     $entity->setTransitionFromStates($values['id'], array_filter($values['from']));
+    $entity->setTransitionToState($values['id'], $values['to']);
     if (isset($values['type_settings'])) {
       $configuration = $entity->getTypePlugin()->getConfiguration();
       $configuration['transitions'][$values['id']] = $values['type_settings'][$entity->getTypePlugin()->getPluginId()];
only in patch2:
unchanged:
--- a/core/modules/workflows/src/Entity/Workflow.php
+++ b/core/modules/workflows/src/Entity/Workflow.php
@@ -427,6 +427,36 @@ public function setTransitionFromStates($transition_id, array $from_state_ids) {
   /**
    * {@inheritdoc}
    */
+  public function setTransitionToState($transition_id, $to_state_id) {
+    if (!isset($this->transitions[$transition_id])) {
+      throw new \InvalidArgumentException("The transition '$transition_id' does not exist in workflow '{$this->id()}'");
+    }
+
+    // Ensure that the states exist.
+    if (!$this->hasState($to_state_id)) {
+      throw new \InvalidArgumentException("The state '$to_state_id' does not exist in workflow '{$this->id()}'");
+    }
+
+    if ($this->transitions[$transition_id]['from']) {
+      foreach ($this->transitions[$transition_id]['from'] as $from_state_id) {
+        if ($this->hasTransitionFromStateToState($from_state_id, $to_state_id)) {
+          $transition = $this->getTransitionFromStateToState($from_state_id, $to_state_id);
+          if ($transition_id !== $transition->id()) {
+            throw new \InvalidArgumentException("The '{$transition->id()}' transition already allows '$from_state_id' to '$to_state_id' transitions in workflow '{$this->id()}'");
+          }
+        }
+      }
+    }
+
+    // Update the transitions.
+    $this->transitions[$transition_id]['to'] = $to_state_id;
+
+    return $this;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
   public function deleteTransition($transition_id) {
     if (isset($this->transitions[$transition_id])) {
       unset($this->transitions[$transition_id]);
only in patch2:
unchanged:
--- a/core/modules/workflows/tests/src/Functional/WorkflowUiTest.php
+++ b/core/modules/workflows/tests/src/Functional/WorkflowUiTest.php
@@ -155,6 +155,34 @@ public function testWorkflowCreation() {
     $workflow = $workflow_storage->loadUnchanged('test');
     $this->assertFalse($workflow->hasTransitionFromStateToState('published', 'published'), 'Cannot transition from published to published');
 
+    // Create a state to test changing the transition 'to' value.
+    $this->drupalGet('admin/config/workflow/workflows/manage/test');
+    $this->clickLink('Add a new state');
+    $this->submitForm(['label' => 'ToTestState', 'id' => 'toteststate'], 'Save');
+    $this->assertSession()->pageTextContains('Created ToTestState state.');
+    // Create a new transition to test changing the transition 'to' value.
+    $this->drupalGet('admin/config/workflow/workflows/manage/test');
+    $this->clickLink('Add a new transition');
+    $this->submitForm(['id' => 'totesttransition', 'label' => 'ToTestTransition', 'from[toteststate]' => 'toteststate', 'to' => 'draft'], 'Save');
+    $this->assertSession()->pageTextContains('Created ToTestTransition transition.');
+    $workflow = $workflow_storage->loadUnchanged('test');
+    $this->assertTrue($workflow->getState('toteststate')->canTransitionTo('draft'), 'Can transition from toteststate to draft');
+    // Edit the new transition to test changing the transition 'to' value.
+    $this->drupalGet('admin/config/workflow/workflows/manage/test/transition/totesttransition');
+    $this->assertSession()->pageTextContains('ToTestTransition');
+    $this->submitForm(['from[toteststate]' => 'toteststate', 'to' => 'published'], 'Save');
+    $workflow = $workflow_storage->loadUnchanged('test');
+    $this->assertTrue($workflow->getState('toteststate')->canTransitionTo('published'), 'Can transition from toteststate to published');
+    $this->assertFalse($workflow->getState('toteststate')->canTransitionTo('draft'), 'Can no longer transition from toteststate to draft');
+    // Delete transition use in test changing the transition 'to' value.
+    $this->drupalGet('admin/config/workflow/workflows/manage/test/transition/totesttransition');
+    $this->clickLink('Delete');
+    $this->submitForm([], 'Delete');
+    // Delete state use in test changing the transition 'to' value.
+    $this->drupalGet('admin/config/workflow/workflows/manage/test/state/toteststate');
+    $this->clickLink('Delete');
+    $this->submitForm([], 'Delete');
+
     // Try creating a duplicate state.
     $this->drupalGet('admin/config/workflow/workflows/manage/test');
     $this->clickLink('Add a new state');