diff --git a/composer.json b/composer.json
index dee4949..b5db002 100755
--- a/composer.json
+++ b/composer.json
@@ -6,8 +6,9 @@
   "description" : "AWS Core for the XP Framework",
   "keywords": ["module", "xp"],
   "require" : {
-    "xp-framework/core": "^12.0 | ^11.0 | ^10.14",
+    "xp-framework/core": "^12.11 | ^11.11",
     "xp-framework/http": "^11.0 | ^10.0 | ^9.0",
+    "xp-framework/networking": "^11.1",
     "xp-forge/json": "^6.0 | ^5.0",
     "xp-forge/marshalling": "^2.0 | ^1.0",
     "php": ">=7.4.0"
diff --git a/src/main/php/com/amazon/aws/ServiceEndpoint.class.php b/src/main/php/com/amazon/aws/ServiceEndpoint.class.php
index 90f1eb7..38a2557 100755
--- a/src/main/php/com/amazon/aws/ServiceEndpoint.class.php
+++ b/src/main/php/com/amazon/aws/ServiceEndpoint.class.php
@@ -200,7 +200,7 @@ public function sign($target, int $expires= 3600, $time= null): string {
   /**
    * Opens a request and returns a `Transfer` instance for writing data to
    *
-   * @throws io.IOException
+   * @throws io.OperationFailed
    */
   public function open(string $method, $target, array $headers, $hash= null, $time= null): Transfer {
     $signature= new SignatureV4($this->credentials());
@@ -263,7 +263,7 @@ public function open(string $method, $target, array $headers, $hash= null, $time
   /**
    * Sends a request and returns the response
    *
-   * @throws io.IOException
+   * @throws io.OperationFailed
    */
   public function request(string $method, $target, array $headers= [], $payload= null, $time= null): Response {
     if (null === $payload) {
diff --git a/src/main/php/com/amazon/aws/credentials/FromSSO.class.php b/src/main/php/com/amazon/aws/credentials/FromSSO.class.php
index 763115c..60ed617 100644
--- a/src/main/php/com/amazon/aws/credentials/FromSSO.class.php
+++ b/src/main/php/com/amazon/aws/credentials/FromSSO.class.php
@@ -1,7 +1,7 @@
 <?php namespace com\amazon\aws\credentials;
 
 use com\amazon\aws\Credentials;
-use io\{File, Path, IOException};
+use io\{File, Path, OperationFailed};
 use lang\{Environment, IllegalStateException};
 use peer\AuthenticationException;
 use peer\http\{HttpConnection, RequestData};
@@ -71,8 +71,8 @@ private function refresh($cache) {
         'X-Amz-User-Agent' => $this->userAgent,
         'Content-Type'     => self::JSON,
       ]);
-    } catch (IOException $t) {
-      throw new IllegalStateException("OIDC refreshing via {$this->refresh->getUrl()->getURL()} failed", $t);
+    } catch (OperationFailed $e) {
+      throw new IllegalStateException("OIDC refreshing via {$this->refresh->getUrl()->getURL()} failed", $e);
     }
 
     if (200 !== $res->statusCode()) {
diff --git a/src/test/php/com/amazon/aws/unittest/CredentialProviderTest.class.php b/src/test/php/com/amazon/aws/unittest/CredentialProviderTest.class.php
index 99f5c12..ad23e57 100755
--- a/src/test/php/com/amazon/aws/unittest/CredentialProviderTest.class.php
+++ b/src/test/php/com/amazon/aws/unittest/CredentialProviderTest.class.php
@@ -2,9 +2,9 @@
 
 use com\amazon\aws\credentials\{FromGiven, FromEnvironment, FromConfig, FromEcs, FromSSO};
 use com\amazon\aws\{Credentials, CredentialProvider};
-use io\{TempFile, IOException};
+use io\TempFile;
 use lang\IllegalStateException;
-use peer\AuthenticationException;
+use peer\{AuthenticationException, ConnectException};
 use test\{Assert, Expect, Test, Values};
 use text\json\{Json, FileInput};
 use util\NoSuchElementException;
@@ -370,7 +370,7 @@ public function ecs_api_error_raises_exception() {
   public function ecs_api_failing_raises_exception() {
     with (new Exported(['AWS_CONTAINER_CREDENTIALS_RELATIVE_URI' => '/get-credentials']), function() {
       $conn= new TestConnection(['/get-credentials' => function($req) {
-        throw new IOException('Connection failed');
+        throw new ConnectException('Connection failed');
       }]);
       (new FromEcs($conn))->credentials();
     });