diff --git a/.gitignore b/.gitignore
index a79486f..9d98656 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 vendor
 composer.lock
 phpunit.xml
+.*.cache
diff --git a/CHANGES.md b/CHANGES.md
index 15111e6..8c87a5d 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,8 @@
+# 2.1.0 / TBA
+
+Add support for PHPUnit 10.1+ (10.0 is not supported)
+Bump requirement to Prophecy 1.18+
+
 # 2.0.2 / 2023-04-18
 
 Add the `@not-deprecated` annotation to avoid phpstan reporting `prophesize` as deprecated due to the TestCase deprecation.
diff --git a/composer.json b/composer.json
index 2c48d3b..83a8818 100644
--- a/composer.json
+++ b/composer.json
@@ -15,8 +15,8 @@
     "prefer-stable": true,
     "require": {
         "php": "^7.3 || ^8",
-        "phpspec/prophecy": "^1.3",
-        "phpunit/phpunit":"^9.1"
+        "phpspec/prophecy": "^1.18",
+        "phpunit/phpunit":"^9.1 || ^10.1"
     },
     "autoload": {
         "psr-4": {
diff --git a/fixtures/NoClass.php b/fixtures/NoClass.php
new file mode 100644
index 0000000..c4494b8
--- /dev/null
+++ b/fixtures/NoClass.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace Prophecy\PhpUnit\Tests\Fixtures;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
+
+class NoClass extends TestCase
+{
+    use ProphecyTrait;
+
+    public function testProphesizeWithoutArguments(): void
+    {
+        $prophecy = $this->prophesize()->reveal();
+        
+        $this->assertInstanceOf(\stdClass::class, $prophecy);
+    }
+}
diff --git a/src/ProphecyTrait.php b/src/ProphecyTrait.php
index 34ff25d..494c228 100644
--- a/src/ProphecyTrait.php
+++ b/src/ProphecyTrait.php
@@ -39,7 +39,14 @@ trait ProphecyTrait
      */
     protected function prophesize(?string $classOrInterface = null): ObjectProphecy
     {
-        if (\is_string($classOrInterface)) {
+        static $isPhpUnit9;
+        $isPhpUnit9 = $isPhpUnit9 ?? method_exists($this, 'recordDoubledType');
+
+        if (! $isPhpUnit9) {
+            // PHPUnit 10.1
+            $this->registerFailureType(PredictionException::class);
+        } elseif (\is_string($classOrInterface)) {
+            // PHPUnit 9
             \assert($this instanceof TestCase);
             $this->recordDoubledType($classOrInterface);
         }
diff --git a/tests/MockFailure.phpt b/tests/MockFailure.phpt
index b80a873..8fd1853 100644
--- a/tests/MockFailure.phpt
+++ b/tests/MockFailure.phpt
@@ -9,6 +9,8 @@ require_once __DIR__ . '/run_test.php';
 --EXPECTF--
 PHPUnit %s
 
+Runtime: %s
+
 F %s 1 / 1 (100%)
 
 Time: %s
diff --git a/tests/NoClass.phpt b/tests/NoClass.phpt
new file mode 100644
index 0000000..e9db4f5
--- /dev/null
+++ b/tests/NoClass.phpt
@@ -0,0 +1,18 @@
+--TEST--
+A test with a Prophecy called without any argument 
+--FILE--
+<?php
+
+require_once __DIR__ . '/run_test.php';
+
+\Prophecy\PhpUnit\Tests\runTest('NoClass');
+--EXPECTF--
+PHPUnit %s
+
+Runtime: %s
+
+. %s 1 / 1 (100%)
+
+Time: %s
+
+OK (1 test, 1 assertion)
diff --git a/tests/NoProphecy.phpt b/tests/NoProphecy.phpt
index 42d5228..1fc87a3 100644
--- a/tests/NoProphecy.phpt
+++ b/tests/NoProphecy.phpt
@@ -9,6 +9,8 @@ require_once __DIR__ . '/run_test.php';
 --EXPECTF--
 PHPUnit %s
 
+Runtime: %s
+
 . %s 1 / 1 (100%)
 
 Time: %s
diff --git a/tests/SpyFailure.phpt b/tests/SpyFailure.phpt
index 532454c..f51dc24 100644
--- a/tests/SpyFailure.phpt
+++ b/tests/SpyFailure.phpt
@@ -9,6 +9,8 @@ require_once __DIR__ . '/run_test.php';
 --EXPECTF--
 PHPUnit %s
 
+Runtime: %s
+
 F %s 1 / 1 (100%)
 
 Time: %a
@@ -16,11 +18,11 @@ Time: %a
 There was 1 failure:
 
 1) Prophecy\PhpUnit\Tests\Fixtures\SpyFailure::testMethod
-No calls have been made that match:
+%ao calls have been made that match:
   Double\DateTime\P1->format(exact("Y-m-d"))
 but expected at least one.
 
-%s/tests/run_test.php:%d
+%a/tests/run_test.php:%d
 
 FAILURES!
 Tests: 1, Assertions: 1, Failures: 1.
diff --git a/tests/Success.phpt b/tests/Success.phpt
index 84a7c64..4e12439 100644
--- a/tests/Success.phpt
+++ b/tests/Success.phpt
@@ -9,6 +9,8 @@ require_once __DIR__ . '/run_test.php';
 --EXPECTF--
 PHPUnit %s
 
+Runtime: %s
+
 . %s 1 / 1 (100%)
 
 Time: %s
diff --git a/tests/WrongCall.phpt b/tests/WrongCall.phpt
index 0485d3f..9831304 100644
--- a/tests/WrongCall.phpt
+++ b/tests/WrongCall.phpt
@@ -9,6 +9,8 @@ require_once __DIR__ . '/run_test.php';
 --EXPECTF--
 PHPUnit %s
 
+Runtime: %s
+
 E %s 1 / 1 (100%)
 
 Time: %a
diff --git a/tests/run_test.php b/tests/run_test.php
index 71540d3..5f1ec63 100644
--- a/tests/run_test.php
+++ b/tests/run_test.php
@@ -2,6 +2,7 @@
 
 namespace Prophecy\PhpUnit\Tests;
 
+use PHPUnit\TextUI\Application;
 use PHPUnit\TextUI\Command;
 
 require_once __DIR__ . '/xdebug_filter.php';
@@ -14,5 +15,11 @@ function runTest(string $fixtureName): void
         throw new \InvalidArgumentException('Unable to find test fixture at path ' . $filename);
     }
 
-    (new Command())->run(['phpunit', $filename], false);
+    if (class_exists(Command::class)) {
+        // PHPUnit 9.x
+        (new Command())->run(['phpunit', $filename, '--verbose', '--no-configuration'], false);
+    } else {
+        // PHPUnit 10.x
+        (new Application())->run(['phpunit', $filename, '--no-configuration']);
+    }
 }