diff --git a/backend/composer.lock b/backend/composer.lock
index 4e06a992..c5584ee1 100644
--- a/backend/composer.lock
+++ b/backend/composer.lock
@@ -5840,16 +5840,16 @@
         },
         {
             "name": "phpseclib/phpseclib",
-            "version": "3.0.49",
+            "version": "3.0.50",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpseclib/phpseclib.git",
-                "reference": "6233a1e12584754e6b5daa69fe1289b47775c1b9"
+                "reference": "aa6ad8321ed103dc3624fb600a25b66ebf78ec7b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/6233a1e12584754e6b5daa69fe1289b47775c1b9",
-                "reference": "6233a1e12584754e6b5daa69fe1289b47775c1b9",
+                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/aa6ad8321ed103dc3624fb600a25b66ebf78ec7b",
+                "reference": "aa6ad8321ed103dc3624fb600a25b66ebf78ec7b",
                 "shasum": ""
             },
             "require": {
@@ -5930,7 +5930,7 @@
             ],
             "support": {
                 "issues": "https://github.com/phpseclib/phpseclib/issues",
-                "source": "https://github.com/phpseclib/phpseclib/tree/3.0.49"
+                "source": "https://github.com/phpseclib/phpseclib/tree/3.0.50"
             },
             "funding": [
                 {
@@ -5946,7 +5946,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2026-01-27T09:17:28+00:00"
+            "time": "2026-03-19T02:57:58+00:00"
         },
         {
             "name": "psr/clock",