diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b8564b5b..728a8dbf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,6 +27,10 @@ jobs:
     strategy:
       matrix:
         include:
+          - name: PHP 8.5
+            PHP_VERSION: 8.5
+          - name: PHP 8.4
+            PHP_VERSION: 8.4
           - name: PHP 8.3
             PHP_VERSION: 8.3
           - name: PHP 8.2
diff --git a/composer.json b/composer.json
index 4c6332dc..7e06af00 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": ">=8.1 <8.4",
+        "php": ">=8.1 <8.6",
         "ext-curl": "*",
         "ext-json": "*"
     },
diff --git a/src/Parse/HttpClients/ParseCurl.php b/src/Parse/HttpClients/ParseCurl.php
index 17cf2fbc..52348552 100644
--- a/src/Parse/HttpClients/ParseCurl.php
+++ b/src/Parse/HttpClients/ParseCurl.php
@@ -133,10 +133,9 @@ public function close()
             throw new ParseException('You must call ParseCurl::init first');
         }
 
-        // close our handle
-        curl_close($this->curl);
-
-        // unset our curl handle
+        // PHP 8.5 deprecates curl_close(); it has had no effect since PHP
+        // 8.0, when CurlHandle became an object released on last reference.
+        // Unsetting the handle below is what actually closes it.
         $this->curl = null;
     }
 }
diff --git a/src/Parse/HttpClients/ParseStream.php b/src/Parse/HttpClients/ParseStream.php
index b6845f70..d18a47c0 100644
--- a/src/Parse/HttpClients/ParseStream.php
+++ b/src/Parse/HttpClients/ParseStream.php
@@ -110,7 +110,22 @@ public function getErrorCode()
     public function getFileContents($filename, $use_include_path, $context)
     {
         $result = file_get_contents($filename, $use_include_path, $context);
-        $this->responseHeaders = $http_response_header;
+
+        // PHP 8.5 deprecated the locally scoped `$http_response_header`
+        // variable in favour of `http_get_last_response_headers()`. That
+        // function does not exist before 8.5, so both paths are kept.
+        //
+        // The legacy read uses `??` deliberately: a direct read raises the
+        // deprecation at compile time on 8.5, even inside `isset()`, while
+        // a null coalesced read does not.
+        $hasHeaderFunction = \function_exists(
+            'http_get_last_response_headers'
+        );
+
+        $this->responseHeaders = $hasHeaderFunction
+            ? (http_get_last_response_headers() ?? [])
+            : ($http_response_header ?? []);
+
         return $result;
     }
 }
diff --git a/src/Parse/ParseException.php b/src/Parse/ParseException.php
index 2f46c886..d65b058a 100644
--- a/src/Parse/ParseException.php
+++ b/src/Parse/ParseException.php
@@ -22,7 +22,7 @@ class ParseException extends Exception
      * @param int        $code     Error code.
      * @param \Exception $previous Previous Exception.
      */
-    public function __construct($message, $code = 0, Exception $previous = null)
+    public function __construct($message, $code = 0, ?Exception $previous = null)
     {
         parent::__construct($message, $code, $previous);
     }