diff --git a/composer.json b/composer.json
index f83feae735..5085137ba2 100644
--- a/composer.json
+++ b/composer.json
@@ -40,7 +40,7 @@
     "ext-xmlwriter": "*",
     "ext-zip": "*",
     "2tvenom/cborencode": "~1.0.2",
-    "aws/aws-sdk-php": "~3.399.0",
+    "aws/aws-sdk-php": "~3.400.0",
     "elasticsearch/elasticsearch": "~8.19.0",
     "endroid/qr-code": "~6.1.3",
     "firebase/php-jwt": "^7.0",
diff --git a/composer.lock b/composer.lock
index 9f8b0ed424..52e55133fb 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "4a1f010a3f69265178588e86d59a5153",
+    "content-hash": "5f783e595e533b345c9131c887b2773b",
     "packages": [
         {
             "name": "2tvenom/cborencode",
@@ -107,16 +107,16 @@
         },
         {
             "name": "aws/aws-sdk-php",
-            "version": "3.399.2",
+            "version": "3.400.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/aws/aws-sdk-php.git",
-                "reference": "a69c0b97b8464b059c8d2e147eab6daed5d5cd25"
+                "reference": "dc874b220df5ec8861fe826b436c19f919d27328"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/aws/aws-sdk-php/zipball/a69c0b97b8464b059c8d2e147eab6daed5d5cd25",
-                "reference": "a69c0b97b8464b059c8d2e147eab6daed5d5cd25",
+                "url": "https://api.github.com/repos/aws/aws-sdk-php/zipball/dc874b220df5ec8861fe826b436c19f919d27328",
+                "reference": "dc874b220df5ec8861fe826b436c19f919d27328",
                 "shasum": ""
             },
             "require": {
@@ -198,9 +198,9 @@
             "support": {
                 "forum": "https://github.com/aws/aws-sdk-php/discussions",
                 "issues": "https://github.com/aws/aws-sdk-php/issues",
-                "source": "https://github.com/aws/aws-sdk-php/tree/3.399.2"
+                "source": "https://github.com/aws/aws-sdk-php/tree/3.400.0"
             },
-            "time": "2026-10-06T22:19:35+00:00"
+            "time": "2026-10-08T18:13:44+00:00"
         },
         {
             "name": "bacon/bacon-qr-code",