diff --git a/test/Connection/Http1ConnectionTest.php b/test/Connection/Http1ConnectionTest.php
index a4ec6333..dd8ba1a3 100644
--- a/test/Connection/Http1ConnectionTest.php
+++ b/test/Connection/Http1ConnectionTest.php
@@ -135,7 +135,7 @@ public function testUpgrade(): \Generator
     public function testTransferTimeout(): \Generator
     {
         $this->setMinimumRuntime(500);
-        $this->setTimeout(600);
+        $this->setTimeout(1000);
 
         [$server, $client] = Socket\createPair();
 
@@ -165,7 +165,7 @@ public function testTransferTimeout(): \Generator
     public function testInactivityTimeout(): \Generator
     {
         $this->setMinimumRuntime(500);
-        $this->setTimeout(1500);
+        $this->setTimeout(2000);
 
         [$server, $client] = Socket\createPair();
 
diff --git a/test/TimeoutTest.php b/test/TimeoutTest.php
index a94a5328..2d496b1c 100644
--- a/test/TimeoutTest.php
+++ b/test/TimeoutTest.php
@@ -103,7 +103,7 @@ public function testTimeoutDuringTlsEnable(): \Generator
             }
         });
 
-        $this->setTimeout(600);
+        $this->setTimeout(1000);
 
         try {
             $uri = "https://" . $server->getAddress() . "/";
@@ -144,7 +144,7 @@ public function testTimeoutDuringTlsEnableCatchable(): \Generator
             }
         });
 
-        $this->setTimeout(600);
+        $this->setTimeout(1000);
 
         try {
             $uri = "https://" . $server->getAddress() . "/";