diff --git a/.changes/nextrelease/bugfix-sso-provider.json b/.changes/nextrelease/bugfix-sso-provider.json
new file mode 100644
index 0000000000..52d9eb2eb5
--- /dev/null
+++ b/.changes/nextrelease/bugfix-sso-provider.json
@@ -0,0 +1,12 @@
+[
+  {
+    "type": "bugfix",
+    "category": "Credentials",
+    "description": "Fixes a bug with the new SSO login flow where the wrong index was being looked at for the SSO client provider region"
+  },
+  {
+    "type": "enhancement",
+    "category": "Token",
+    "description": "Removes an instance of the utf8_decode function that was deprecated as of 8.2"
+  }
+]
\ No newline at end of file
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
new file mode 100644
index 0000000000..de68edbfca
--- /dev/null
+++ b/.github/workflows/dependency-review.yml
@@ -0,0 +1,20 @@
+name: Dependency Review
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+permissions:
+  contents: read
+
+jobs:
+  dependency-review:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout Repository
+        uses:  actions/checkout@v3
+      - name: Dependency Review
+        uses: actions/dependency-review-action@v3
+        with:
+          fail-on-severity: low
diff --git a/composer.json b/composer.json
index 0fbde38895..38c37253e0 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     },
     "require": {
         "php": ">=5.5",
-        "guzzlehttp/guzzle": "^6.5.8 || ^7.4.5",
+        "guzzlehttp/guzzle": "<6.3 || <7.1",
         "guzzlehttp/psr7": "^1.9.1 || ^2.4.5",
         "guzzlehttp/promises": "^1.4.0",
         "mtdowling/jmespath.php": "^2.6",
@@ -39,7 +39,7 @@
         "nette/neon": "^2.3",
         "andrewsville/php-token-reflection": "^1.4",
         "psr/cache": "^1.0",
-        "psr/http-message": "^1.0",
+        "psr/http-message": "<1.1",
         "psr/simple-cache": "^1.0",
         "paragonie/random_compat": ">= 2",
         "sebastian/comparator": "^1.2.3 || ^4.0",
diff --git a/src/S3/StreamWrapper.php b/src/S3/StreamWrapper.php
index a70e5cd52d..3e7c9aa4a7 100644
--- a/src/S3/StreamWrapper.php
+++ b/src/S3/StreamWrapper.php
@@ -135,10 +135,7 @@ public static function register(
 
     public function stream_close()
     {
-        if (!$this->isFlushed
-            && empty($this->body->getSize())
-            && $this->mode !== 'r'
-        ) {
+        if ($this->body->getSize() === 0 && !($this->isFlushed)) {
             $this->stream_flush();
         }
         $this->body = $this->cache = null;
@@ -171,14 +168,6 @@ public function stream_eof()
 
     public function stream_flush()
     {
-        // Check if stream body size has been
-        // calculated via a flush or close
-        if($this->body->getSize() === null && $this->mode !== 'r') {
-            return $this->triggerError(
-                "Unable to determine stream size. Did you forget to close or flush the stream?"
-            );
-        }
-
         $this->isFlushed = true;
         if ($this->mode == 'r') {
             return false;