diff --git a/rules-tests/TypeDeclarationDocblocks/Rector/ClassMethod/DocblockReturnArrayFromDirectArrayInstanceRector/Fixture/false_and_true.php.inc b/rules-tests/TypeDeclarationDocblocks/Rector/ClassMethod/DocblockReturnArrayFromDirectArrayInstanceRector/Fixture/false_and_true.php.inc
new file mode 100644
index 00000000000..c6728e3a9ea
--- /dev/null
+++ b/rules-tests/TypeDeclarationDocblocks/Rector/ClassMethod/DocblockReturnArrayFromDirectArrayInstanceRector/Fixture/false_and_true.php.inc
@@ -0,0 +1,34 @@
+<?php
+
+namespace Rector\Tests\TypeDeclarationDocblocks\Rector\ClassMethod\DocblockReturnArrayFromDirectArrayInstanceRector\Fixture;
+
+function FalseAndTrue()
+{
+    return [
+        'first'  => [true],
+        'second' => [false],
+        'third'  => [true],
+        'fourth' => [false],
+    ];
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\TypeDeclarationDocblocks\Rector\ClassMethod\DocblockReturnArrayFromDirectArrayInstanceRector\Fixture;
+
+/**
+ * @return array<string, true[]|false[]>
+ */
+function FalseAndTrue()
+{
+    return [
+        'first'  => [true],
+        'second' => [false],
+        'third'  => [true],
+        'fourth' => [false],
+    ];
+}
+
+?>
diff --git a/src/NodeTypeResolver/PHPStan/TypeHasher.php b/src/NodeTypeResolver/PHPStan/TypeHasher.php
index 5ec869ad6b3..1caa97a9f3b 100644
--- a/src/NodeTypeResolver/PHPStan/TypeHasher.php
+++ b/src/NodeTypeResolver/PHPStan/TypeHasher.php
@@ -32,7 +32,7 @@ public function createTypeHash(Type $type): string
         if ($type instanceof ArrayType) {
             return $this->createTypeHash($type->getIterableValueType()) . $this->createTypeHash(
                 $type->getIterableKeyType()
-            ) . '[]';
+            ) . $type->getItemType()->describe(VerbosityLevel::precise()) . '[]';
         }
 
         if ($type instanceof GenericObjectType) {