diff --git a/src/Expectation.php b/src/Expectation.php
index 879f7131..b156d558 100644
--- a/src/Expectation.php
+++ b/src/Expectation.php
@@ -158,6 +158,26 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * Asserts that the value starts with $expected.
+     */
+    public function toStartWith(string $expected): Expectation
+    {
+        Assert::assertStringStartsWith($expected, $this->value);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value ends with $expected.
+     */
+    public function toEndWith(string $expected): Expectation
+    {
+        Assert::assertStringEndsWith($expected, $this->value);
+
+        return $this;
+    }
+
     /**
      * Asserts that $count matches the number of elements of the value.
      */
diff --git a/tests/.snapshots/success.txt b/tests/.snapshots/success.txt
index 89093913..aae4b194 100644
--- a/tests/.snapshots/success.txt
+++ b/tests/.snapshots/success.txt
@@ -155,6 +155,11 @@
   ✓ passes strings
   ✓ passes arrays
   ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Expect\toEndWith
+  ✓ pass
+  ✓ failures
   ✓ not failures
 
    PASS  Tests\Expect\toEqual
@@ -195,6 +200,11 @@
    PASS  Tests\Expect\toMatchObject
   ✓ pass
   ✓ failures
+  ✓ not failures
+
+   PASS  Tests\Expect\toStartWith
+  ✓ pass
+  ✓ failures
   ✓ not failures
 
    PASS  Tests\Features\AfterAll
@@ -363,5 +373,5 @@
   ✓ depends with defined arguments
   ✓ depends run test only once
 
-  Tests:  6 skipped, 214 passed
+  Tests:  6 skipped, 220 passed
   
\ No newline at end of file
diff --git a/tests/Expect/toEndWith.php b/tests/Expect/toEndWith.php
new file mode 100644
index 00000000..e669795e
--- /dev/null
+++ b/tests/Expect/toEndWith.php
@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('username')->toEndWith('name');
+});
+
+test('failures', function () {
+    expect('username')->toEndWith('password');
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect('username')->not->toEndWith('name');
+})->throws(ExpectationFailedException::class);
diff --git a/tests/Expect/toStartWith.php b/tests/Expect/toStartWith.php
new file mode 100644
index 00000000..64465869
--- /dev/null
+++ b/tests/Expect/toStartWith.php
@@ -0,0 +1,15 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('username')->toStartWith('user');
+});
+
+test('failures', function () {
+    expect('username')->toStartWith('password');
+})->throws(ExpectationFailedException::class);
+
+test('not failures', function () {
+    expect('username')->not->toStartWith('user');
+})->throws(ExpectationFailedException::class);