diff --git a/.gitattributes b/.gitattributes
index e180457..3cd02d7 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -17,8 +17,6 @@ infection.json export-ignore
 LICENSE export-ignore
 Makefile export-ignore
 phpbench.json export-ignore
-phpstan.neon.dist export-ignore
 phpunit.xml export-ignore
-psalm-baseline.xml export-ignore
 psalm.xml export-ignore
 README.md export-ignore
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
deleted file mode 100644
index ec35f6c..0000000
--- a/phpstan.neon.dist
+++ /dev/null
@@ -1,6 +0,0 @@
-parameters:
-	ignoreErrors:
-		-
-			message: "#^Generator expects key type TKey, \\(int\\|string\\) given\\.$#"
-			count: 1
-			path: src/ConcatIterableAggregate.php
diff --git a/psalm-baseline.xml b/psalm-baseline.xml
deleted file mode 100644
index 5301072..0000000
--- a/psalm-baseline.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<files psalm-version="4.23.0@f1fe6ff483bf325c803df9f510d09a03fd796f88">
-  <file src="src/InterruptableIterableIteratorAggregate.php">
-    <ImplementedReturnTypeMismatch occurrences="1">
-      <code>Generator&lt;Generator&lt;TKey, T&gt;, array{0: TKey, 1: T}&gt;</code>
-    </ImplementedReturnTypeMismatch>
-  </file>
-</files>
diff --git a/psalm.xml b/psalm.xml
index 9afb7ce..4702b42 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -3,7 +3,6 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
-    errorBaseline="psalm-baseline.xml"
 >
     <projectFiles>
         <directory name="./src" />
diff --git a/src/CachingIteratorAggregate.php b/src/CachingIteratorAggregate.php
index f7a2070..ea091ac 100644
--- a/src/CachingIteratorAggregate.php
+++ b/src/CachingIteratorAggregate.php
@@ -48,10 +48,7 @@ public function __construct(Iterator $iterator)
      */
     public function getIterator(): Generator
     {
-        /** @var array<int, array{0:TKey, 1:T}> $cache */
-        $cache = $this->iterator->getCache();
-
-        foreach ($cache as [$key, $current]) {
+        foreach ($this->iterator->getCache() as [$key, $current]) {
             yield $key => $current;
         }