diff --git a/src/Psalm/Codebase.php b/src/Psalm/Codebase.php
index 8ef58c00c0f..56a9aab5d34 100644
--- a/src/Psalm/Codebase.php
+++ b/src/Psalm/Codebase.php
@@ -533,11 +533,12 @@ public function createClassLikeStorage(string $fq_classlike_name): ClassLikeStor
 
     public function cacheClassLikeStorage(ClassLikeStorage $classlike_storage, string $file_path): void
     {
-        $file_contents = $this->file_provider->getContents($file_path);
-
-        if ($this->classlike_storage_provider->cache) {
-            $this->classlike_storage_provider->cache->writeToCache($classlike_storage, $file_path, $file_contents);
+        if (!$this->classlike_storage_provider->cache) {
+            return;
         }
+
+        $file_contents = $this->file_provider->getContents($file_path);
+        $this->classlike_storage_provider->cache->writeToCache($classlike_storage, $file_path, $file_contents);
     }
 
     public function exhumeClassLikeStorage(string $fq_classlike_name, string $file_path): void
diff --git a/src/Psalm/Internal/Cache.php b/src/Psalm/Internal/Cache.php
index 3b8edb21038..88e2f5704d7 100644
--- a/src/Psalm/Internal/Cache.php
+++ b/src/Psalm/Internal/Cache.php
@@ -11,6 +11,7 @@
 use function gzinflate;
 use function igbinary_serialize;
 use function igbinary_unserialize;
+use function is_writable;
 use function lz4_compress;
 use function lz4_uncompress;
 use function serialize;
@@ -86,7 +87,7 @@ public function getItem(string $path)
 
     public function deleteItem(string $path): void
     {
-        if (file_exists($path)) {
+        if (@is_writable($path)) {
             @unlink($path);
         }
     }
diff --git a/src/Psalm/Internal/Provider/ClassLikeStorageCacheProvider.php b/src/Psalm/Internal/Provider/ClassLikeStorageCacheProvider.php
index 8c16dc8b6b8..82eb578fecb 100644
--- a/src/Psalm/Internal/Provider/ClassLikeStorageCacheProvider.php
+++ b/src/Psalm/Internal/Provider/ClassLikeStorageCacheProvider.php
@@ -18,7 +18,6 @@
 use function is_null;
 use function mkdir;
 use function strtolower;
-use function unlink;
 
 use const DIRECTORY_SEPARATOR;
 use const PHP_VERSION_ID;
@@ -95,7 +94,7 @@ public function getLatestFromCache(
         if (@get_class($cached_value) === '__PHP_Incomplete_Class'
             || $cache_hash !== $cached_value->hash
         ) {
-            unlink($this->getCacheLocationForClass($fq_classlike_name_lc, $file_path));
+            $this->cache->deleteItem($this->getCacheLocationForClass($fq_classlike_name_lc, $file_path));
 
             throw new UnexpectedValueException($fq_classlike_name_lc . ' should not be outdated');
         }
diff --git a/src/Psalm/Internal/Provider/ParserCacheProvider.php b/src/Psalm/Internal/Provider/ParserCacheProvider.php
index 7c08d74a459..55aa13e03f7 100644
--- a/src/Psalm/Internal/Provider/ParserCacheProvider.php
+++ b/src/Psalm/Internal/Provider/ParserCacheProvider.php
@@ -20,13 +20,11 @@
 use function is_dir;
 use function is_readable;
 use function is_string;
-use function is_writable;
 use function json_decode;
 use function json_encode;
 use function mkdir;
 use function scandir;
 use function touch;
-use function unlink;
 
 use const DIRECTORY_SEPARATOR;
 use const JSON_THROW_ON_ERROR;
@@ -319,8 +317,8 @@ public function deleteOldParserCaches(float $time_before): int
                     continue;
                 }
 
-                if (filemtime($full_path) < $time_before && is_writable($full_path)) {
-                    unlink($full_path);
+                if (filemtime($full_path) < $time_before) {
+                    $this->cache->deleteItem($full_path);
                     ++$removed_count;
                 }
             }
diff --git a/src/Psalm/Internal/Provider/ProjectCacheProvider.php b/src/Psalm/Internal/Provider/ProjectCacheProvider.php
index b97b0c31cac..4948acc5f24 100644
--- a/src/Psalm/Internal/Provider/ProjectCacheProvider.php
+++ b/src/Psalm/Internal/Provider/ProjectCacheProvider.php
@@ -78,20 +78,19 @@ public function getLastRun(string $psalm_version): int
 
     public function hasLockfileChanged(): bool
     {
-        if (!file_exists($this->composer_lock_location)) {
-            return true;
-        }
-
-        $lockfile_contents = Providers::safeFileGetContents($this->composer_lock_location);
-
-        if (!$lockfile_contents) {
-            return true;
-        }
+        if (file_exists($this->composer_lock_location)) {
+            $lockfile_contents = Providers::safeFileGetContents($this->composer_lock_location);
+            if (!$lockfile_contents) {
+                return true;
+            }
 
-        if (PHP_VERSION_ID >= 8_01_00) {
-            $hash = hash('xxh128', $lockfile_contents);
+            if (PHP_VERSION_ID >= 8_01_00) {
+                $hash = hash('xxh128', $lockfile_contents);
+            } else {
+                $hash = hash('md4', $lockfile_contents);
+            }
         } else {
-            $hash = hash('md4', $lockfile_contents);
+            $hash = '';
         }
 
         $changed = $hash !== $this->getComposerLockHash();