diff --git a/example3_1/composer.lock b/example3_1/composer.lock
index 77d6beb..215674a 100644
--- a/example3_1/composer.lock
+++ b/example3_1/composer.lock
@@ -266,16 +266,16 @@
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "2.12.0",
+            "version": "2.13.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "9b38012e7b54f594707e6db52c684dc0a74b3a43"
+                "reference": "dad89620b7a6edb60c15858442eb2e408b45d8f4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/9b38012e7b54f594707e6db52c684dc0a74b3a43",
-                "reference": "9b38012e7b54f594707e6db52c684dc0a74b3a43",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/dad89620b7a6edb60c15858442eb2e408b45d8f4",
+                "reference": "dad89620b7a6edb60c15858442eb2e408b45d8f4",
                 "shasum": ""
             },
             "require": {
@@ -284,7 +284,7 @@
                 "psr/http-message": "^1.1 || ^2.0",
                 "ralouphie/getallheaders": "^3.0",
                 "symfony/deprecation-contracts": "^2.5 || ^3.0",
-                "symfony/polyfill-php80": "^1.24"
+                "symfony/polyfill-php80": "^1.25"
             },
             "provide": {
                 "psr/http-factory-implementation": "1.0",
@@ -365,7 +365,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/psr7/issues",
-                "source": "https://github.com/guzzle/psr7/tree/2.12.0"
+                "source": "https://github.com/guzzle/psr7/tree/2.13.0"
             },
             "funding": [
                 {
@@ -381,7 +381,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-06-16T21:50:11+00:00"
+            "time": "2026-07-16T22:23:49+00:00"
         },
         {
             "name": "openapi/pet-store-client",