diff --git a/src/Node/ModuleNode.php b/src/Node/ModuleNode.php
index ddb3f7346..a127a399a 100644
--- a/src/Node/ModuleNode.php
+++ b/src/Node/ModuleNode.php
@@ -448,6 +448,7 @@ final class ModuleNode extends Node
         $compiler
             ->write("/**\n")
             ->write(" * @codeCoverageIgnore\n")
+            ->write(" * @return array<int, int>\n")
             ->write(" */\n")
             ->write("public function getDebugInfo(): array\n", "{\n")
             ->indent()
diff --git a/tests/Node/ModuleTest.php b/tests/Node/ModuleTest.php
index f017b483b..97ae7bf3f 100644
--- a/tests/Node/ModuleTest.php
+++ b/tests/Node/ModuleTest.php
@@ -116,6 +116,7 @@ class __TwigTemplate_%x extends Template
 
     /**
      * @codeCoverageIgnore
+     * @return array<int, int>
      */
     public function getDebugInfo(): array
     {
@@ -206,6 +207,7 @@ class __TwigTemplate_%x extends Template
 
     /**
      * @codeCoverageIgnore
+     * @return array<int, int>
      */
     public function getDebugInfo(): array
     {
@@ -300,6 +302,7 @@ class __TwigTemplate_%x extends Template
 
     /**
      * @codeCoverageIgnore
+     * @return array<int, int>
      */
     public function getDebugInfo(): array
     {