diff --git a/mailpoet/composer.json b/mailpoet/composer.json
index 0744072d7d..3fd63d0f65 100644
--- a/mailpoet/composer.json
+++ b/mailpoet/composer.json
@@ -28,7 +28,7 @@
     "codeception/verify": "1.5.0",
     "composer/xdebug-handler": "^1.3",
     "consolidation/robo": "3.0.10",
-    "guzzlehttp/guzzle": "6.5.7",
+    "guzzlehttp/guzzle": "6.5.8",
     "hoa/console": "^3.17",
     "lucatume/wp-browser": "3.1.5",
     "phpunit/phpunit": "8.5.25",
diff --git a/mailpoet/composer.lock b/mailpoet/composer.lock
index 31c974f3d4..9b6177d3d9 100644
--- a/mailpoet/composer.lock
+++ b/mailpoet/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": "b5bdb4f1306457a1046a79806bf900eb",
+    "content-hash": "38f8a760a57be669d2fe1abb5e744d2a",
     "packages": [
         {
             "name": "mtdowling/cron-expression",
@@ -2218,24 +2218,24 @@
         },
         {
             "name": "guzzlehttp/guzzle",
-            "version": "6.5.7",
+            "version": "6.5.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "724562fa861e21a4071c652c8a159934e4f05592"
+                "reference": "a52f0440530b54fa079ce76e8c5d196a42cad981"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/724562fa861e21a4071c652c8a159934e4f05592",
-                "reference": "724562fa861e21a4071c652c8a159934e4f05592",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/a52f0440530b54fa079ce76e8c5d196a42cad981",
+                "reference": "a52f0440530b54fa079ce76e8c5d196a42cad981",
                 "shasum": ""
             },
             "require": {
                 "ext-json": "*",
                 "guzzlehttp/promises": "^1.0",
-                "guzzlehttp/psr7": "^1.6.1",
+                "guzzlehttp/psr7": "^1.9",
                 "php": ">=5.5",
-                "symfony/polyfill-intl-idn": "^1.17.0"
+                "symfony/polyfill-intl-idn": "^1.17"
             },
             "require-dev": {
                 "ext-curl": "*",
@@ -2313,7 +2313,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/guzzle/issues",
-                "source": "https://github.com/guzzle/guzzle/tree/6.5.7"
+                "source": "https://github.com/guzzle/guzzle/tree/6.5.8"
             },
             "funding": [
                 {
@@ -2329,7 +2329,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-06-09T21:36:50+00:00"
+            "time": "2022-06-20T22:16:07+00:00"
         },
         {
             "name": "guzzlehttp/promises",
@@ -2417,16 +2417,16 @@
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "1.8.5",
+            "version": "1.9.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "337e3ad8e5716c15f9657bd214d16cc5e69df268"
+                "reference": "e98e3e6d4f86621a9b75f623996e6bbdeb4b9318"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/337e3ad8e5716c15f9657bd214d16cc5e69df268",
-                "reference": "337e3ad8e5716c15f9657bd214d16cc5e69df268",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/e98e3e6d4f86621a9b75f623996e6bbdeb4b9318",
+                "reference": "e98e3e6d4f86621a9b75f623996e6bbdeb4b9318",
                 "shasum": ""
             },
             "require": {
@@ -2447,7 +2447,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.7-dev"
+                    "dev-master": "1.9-dev"
                 }
             },
             "autoload": {
@@ -2507,7 +2507,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/psr7/issues",
-                "source": "https://github.com/guzzle/psr7/tree/1.8.5"
+                "source": "https://github.com/guzzle/psr7/tree/1.9.0"
             },
             "funding": [
                 {
@@ -2523,7 +2523,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-03-20T21:51:18+00:00"
+            "time": "2022-06-20T21:43:03+00:00"
         },
         {
             "name": "hoa/consistency",