diff --git a/composer.json b/composer.json
index 2e18d76d1..d85618647 100644
--- a/composer.json
+++ b/composer.json
@@ -39,7 +39,7 @@
 		"pear/pear-core-minimal": "^v1.10",
 		"php-http/guzzle7-adapter": "^1.0.0",
 		"php-opencloud/openstack": "^3.1",
-		"phpseclib/phpseclib": "^2.0.40",
+		"phpseclib/phpseclib": "^3.0.21",
 		"pimple/pimple": "^3.5.0",
 		"psr/clock": "^1.0",
 		"psr/container": "^2.0.2",
diff --git a/composer.lock b/composer.lock
index 2a42c4704..28cb6a8ae 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": "b67e6a271daa5ecb2f361e80ebc42704",
+    "content-hash": "32132899fbcc4e54d2bf2e85e8f6ba44",
     "packages": [
         {
             "name": "aws/aws-crt-php",
@@ -2387,6 +2387,123 @@
             },
             "time": "2022-01-27T09:35:39+00:00"
         },
+        {
+            "name": "paragonie/constant_time_encoding",
+            "version": "v2.6.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/constant_time_encoding.git",
+                "reference": "58c3f47f650c94ec05a151692652a868995d2938"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/constant_time_encoding/zipball/58c3f47f650c94ec05a151692652a868995d2938",
+                "reference": "58c3f47f650c94ec05a151692652a868995d2938",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7|^8"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6|^7|^8|^9",
+                "vimeo/psalm": "^1|^2|^3|^4"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "ParagonIE\\ConstantTime\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com",
+                    "role": "Maintainer"
+                },
+                {
+                    "name": "Steve 'Sc00bz' Thomas",
+                    "email": "steve@tobtu.com",
+                    "homepage": "https://www.tobtu.com",
+                    "role": "Original Developer"
+                }
+            ],
+            "description": "Constant-time Implementations of RFC 4648 Encoding (Base-64, Base-32, Base-16)",
+            "keywords": [
+                "base16",
+                "base32",
+                "base32_decode",
+                "base32_encode",
+                "base64",
+                "base64_decode",
+                "base64_encode",
+                "bin2hex",
+                "encoding",
+                "hex",
+                "hex2bin",
+                "rfc4648"
+            ],
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/constant_time_encoding/issues",
+                "source": "https://github.com/paragonie/constant_time_encoding"
+            },
+            "time": "2022-06-14T06:56:20+00:00"
+        },
+        {
+            "name": "paragonie/random_compat",
+            "version": "v9.99.100",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/random_compat.git",
+                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/996434e5492cb4c3edcb9168db6fbb1359ef965a",
+                "reference": "996434e5492cb4c3edcb9168db6fbb1359ef965a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">= 7"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.*|5.*",
+                "vimeo/psalm": "^1"
+            },
+            "suggest": {
+                "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+            },
+            "type": "library",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+            "keywords": [
+                "csprng",
+                "polyfill",
+                "pseudorandom",
+                "random"
+            ],
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/random_compat/issues",
+                "source": "https://github.com/paragonie/random_compat"
+            },
+            "time": "2020-10-15T08:29:30+00:00"
+        },
         {
             "name": "pear/archive_tar",
             "version": "1.4.14",
@@ -2876,32 +2993,32 @@
         },
         {
             "name": "phpseclib/phpseclib",
-            "version": "2.0.40",
+            "version": "3.0.21",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpseclib/phpseclib.git",
-                "reference": "5ef6f8376ddad21f3ce1da429950f7e00ec2292c"
+                "reference": "4580645d3fc05c189024eb3b834c6c1e4f0f30a1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/5ef6f8376ddad21f3ce1da429950f7e00ec2292c",
-                "reference": "5ef6f8376ddad21f3ce1da429950f7e00ec2292c",
+                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/4580645d3fc05c189024eb3b834c6c1e4f0f30a1",
+                "reference": "4580645d3fc05c189024eb3b834c6c1e4f0f30a1",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
+                "paragonie/constant_time_encoding": "^1|^2",
+                "paragonie/random_compat": "^1.4|^2.0|^9.99.99",
+                "php": ">=5.6.1"
             },
             "require-dev": {
-                "phing/phing": "~2.7",
-                "phpunit/phpunit": "^4.8.35|^5.7|^6.0|^9.4",
-                "squizlabs/php_codesniffer": "~2.0"
+                "phpunit/phpunit": "*"
             },
             "suggest": {
+                "ext-dom": "Install the DOM extension to load XML formatted public keys.",
                 "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",
                 "ext-libsodium": "SSH2/SFTP can make use of some algorithms provided by the libsodium-php extension.",
                 "ext-mcrypt": "Install the Mcrypt extension in order to speed up a few other cryptographic operations.",
-                "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations.",
-                "ext-xml": "Install the XML extension to load XML formatted public keys."
+                "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations."
             },
             "type": "library",
             "autoload": {
@@ -2909,7 +3026,7 @@
                     "phpseclib/bootstrap.php"
                 ],
                 "psr-4": {
-                    "phpseclib\\": "phpseclib/"
+                    "phpseclib3\\": "phpseclib/"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -2966,7 +3083,7 @@
             ],
             "support": {
                 "issues": "https://github.com/phpseclib/phpseclib/issues",
-                "source": "https://github.com/phpseclib/phpseclib/tree/2.0.40"
+                "source": "https://github.com/phpseclib/phpseclib/tree/3.0.21"
             },
             "funding": [
                 {
@@ -2982,7 +3099,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-12-17T17:22:59+00:00"
+            "time": "2023-07-09T15:24:48+00:00"
         },
         {
             "name": "pimple/pimple",