diff --git a/src/Release/Branch.php b/src/Release/Branch.php
new file mode 100644
index 0000000000..2c5a978e65
--- /dev/null
+++ b/src/Release/Branch.php
@@ -0,0 +1,61 @@
+<?php
+
+declare(strict_types=1);
+
+namespace phpweb\Release;
+
+final readonly class Branch
+{
+    private function __construct(
+        private Major $major,
+        private Minor $minor
+    ) {
+    }
+
+    public static function create(
+        Major $major,
+        Minor $minor
+    ): self {
+        return new self(
+            $major,
+            $minor
+        );
+    }
+
+    /**
+     * @throws \InvalidArgumentException
+     */
+    public static function fromString(string $value): self
+    {
+        if (1 !== preg_match('/^(?P<major>(0|[1-9]\d*))\.(?P<minor>(0|[1-9]\d*)$)/', $value, $matches)) {
+            throw new \InvalidArgumentException(\sprintf(
+                'Value "%s" does not appear to be a valid value for a branch name.',
+                $value
+            ));
+        }
+
+        return new self(
+            Major::fromString($matches['major']),
+            Minor::fromString($matches['minor']),
+        );
+    }
+
+    public function major(): Major
+    {
+        return $this->major;
+    }
+
+    public function minor(): Minor
+    {
+        return $this->minor;
+    }
+
+    public function toString(): string
+    {
+        return sprintf(
+            '%s.%s',
+            $this->major->toString(),
+            $this->minor->toString(),
+        );
+    }
+}
diff --git a/src/Release/Major.php b/src/Release/Major.php
new file mode 100644
index 0000000000..9060a316dd
--- /dev/null
+++ b/src/Release/Major.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace phpweb\Release;
+
+final readonly class Major
+{
+    private function __construct(private readonly string $value)
+    {
+    }
+
+    /**
+     * @throws \InvalidArgumentException
+     */
+    public static function fromString(string $value): self
+    {
+        if (1 !== preg_match('/^(0|[1-9]\d*)$/', $value)) {
+            throw new \InvalidArgumentException(\sprintf(
+                'Value "%s" does not appear to be a valid value for a major version.',
+                $value
+            ));
+        }
+
+        return new self($value);
+    }
+
+    public function toString(): string
+    {
+        return $this->value;
+    }
+}
diff --git a/src/Release/Minor.php b/src/Release/Minor.php
new file mode 100644
index 0000000000..ebecb31b2f
--- /dev/null
+++ b/src/Release/Minor.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace phpweb\Release;
+
+final readonly class Minor
+{
+    private function __construct(private readonly string $value)
+    {
+    }
+
+    /**
+     * @throws \InvalidArgumentException
+     */
+    public static function fromString(string $value): self
+    {
+        if (1 !== preg_match('/^(0|[1-9]\d*)$/', $value)) {
+            throw new \InvalidArgumentException(\sprintf(
+                'Value "%s" does not appear to be a valid value for a minor version.',
+                $value
+            ));
+        }
+
+        return new self($value);
+    }
+
+    public function toString(): string
+    {
+        return $this->value;
+    }
+}
diff --git a/tests/UserNotes/Release/Branch/create-returns-branch.phpt b/tests/UserNotes/Release/Branch/create-returns-branch.phpt
new file mode 100644
index 0000000000..a6fa0604ec
--- /dev/null
+++ b/tests/UserNotes/Release/Branch/create-returns-branch.phpt
@@ -0,0 +1,31 @@
+--TEST--
+Branch::create() returns Branch
+--FILE--
+<?php
+
+declare(strict_types=1);
+
+use phpweb\Release;
+
+require_once __DIR__ . '/../../../../src/autoload.php';
+
+$branch = Release\Branch::create(
+    Release\Major::fromString('8'),
+    Release\Minor::fromString('4'),
+);
+
+var_dump([
+    $branch->toString(),
+    $branch->major()->toString(),
+    $branch->minor()->toString(),
+]);
+?>
+--EXPECT--
+array(3) {
+  [0]=>
+  string(3) "8.4"
+  [1]=>
+  string(1) "8"
+  [2]=>
+  string(1) "4"
+}
diff --git a/tests/UserNotes/Release/Branch/from-string-rejects-invalid-value.phpt b/tests/UserNotes/Release/Branch/from-string-rejects-invalid-value.phpt
new file mode 100644
index 0000000000..d566d894cb
--- /dev/null
+++ b/tests/UserNotes/Release/Branch/from-string-rejects-invalid-value.phpt
@@ -0,0 +1,50 @@
+--TEST--
+Branch::fromString() rejects invalid values
+--FILE--
+<?php
+
+declare(strict_types=1);
+
+use phpweb\Release;
+
+require_once __DIR__ . '/../../../../src/autoload.php';
+
+$values = [
+    'string-blank' => ' ',
+    'string-empty' => '',
+    'string-major-leading-zero' => '00.3',
+    'string-major-minor-patch' => '8.3.0',
+    'string-major-only' => '8',
+    'string-minor-leading-zero' => '8.03',
+    'string-word' => 'foo',
+];
+
+$invalidValues = array_filter($values, static function (string $value): bool {
+    try {
+        Release\Branch::fromString($value);
+    } catch (\InvalidArgumentException) {
+        return true;
+    }
+
+    return false;
+});
+
+var_dump($invalidValues);
+?>
+--EXPECT--
+array(7) {
+  ["string-blank"]=>
+  string(1) " "
+  ["string-empty"]=>
+  string(0) ""
+  ["string-major-leading-zero"]=>
+  string(4) "00.3"
+  ["string-major-minor-patch"]=>
+  string(5) "8.3.0"
+  ["string-major-only"]=>
+  string(1) "8"
+  ["string-minor-leading-zero"]=>
+  string(4) "8.03"
+  ["string-word"]=>
+  string(3) "foo"
+}
diff --git a/tests/UserNotes/Release/Branch/from-string-returns-branch.phpt b/tests/UserNotes/Release/Branch/from-string-returns-branch.phpt
new file mode 100644
index 0000000000..0ecff1430f
--- /dev/null
+++ b/tests/UserNotes/Release/Branch/from-string-returns-branch.phpt
@@ -0,0 +1,17 @@
+--TEST--
+Branch::fromString() returns Branch
+--FILE--
+<?php
+
+declare(strict_types=1);
+
+use phpweb\Release;
+
+require_once __DIR__ . '/../../../../src/autoload.php';
+
+$branch = Release\Branch::fromString('8.3');
+
+var_dump($branch->toString());
+?>
+--EXPECT--
+string(3) "8.3"
diff --git a/tests/UserNotes/Release/Major/from-string-rejects-invalid-value.phpt b/tests/UserNotes/Release/Major/from-string-rejects-invalid-value.phpt
new file mode 100644
index 0000000000..a6c7b1cad3
--- /dev/null
+++ b/tests/UserNotes/Release/Major/from-string-rejects-invalid-value.phpt
@@ -0,0 +1,41 @@
+--TEST--
+Major::fromString() rejects invalid values
+--FILE--
+<?php
+
+declare(strict_types=1);
+
+use phpweb\Release;
+
+require_once __DIR__ . '/../../../../src/autoload.php';
+
+$values = [
+    'string-blank' => ' ',
+    'string-empty' => '',
+    'string-leading-zero' => '01',
+    'string-word' => 'foo',
+];
+
+$invalidValues = array_filter($values, static function (string $value): bool {
+    try {
+        Release\Major::fromString($value);
+    } catch (\InvalidArgumentException) {
+        return true;
+    }
+
+    return false;
+});
+
+var_dump($invalidValues);
+?>
+--EXPECT--
+array(4) {
+  ["string-blank"]=>
+  string(1) " "
+  ["string-empty"]=>
+  string(0) ""
+  ["string-leading-zero"]=>
+  string(2) "01"
+  ["string-word"]=>
+  string(3) "foo"
+}
diff --git a/tests/UserNotes/Release/Major/from-string-returns-major.phpt b/tests/UserNotes/Release/Major/from-string-returns-major.phpt
new file mode 100644
index 0000000000..1d1d27ad34
--- /dev/null
+++ b/tests/UserNotes/Release/Major/from-string-returns-major.phpt
@@ -0,0 +1,17 @@
+--TEST--
+Major::fromString() returns Major
+--FILE--
+<?php
+
+declare(strict_types=1);
+
+use phpweb\Release;
+
+require_once __DIR__ . '/../../../../src/autoload.php';
+
+$major = Release\Major::fromString('8');
+
+var_dump($major->toString());
+?>
+--EXPECT--
+string(1) "8"
diff --git a/tests/UserNotes/Release/Minor/from-string-rejects-invalid-value.phpt b/tests/UserNotes/Release/Minor/from-string-rejects-invalid-value.phpt
new file mode 100644
index 0000000000..5cf538454f
--- /dev/null
+++ b/tests/UserNotes/Release/Minor/from-string-rejects-invalid-value.phpt
@@ -0,0 +1,41 @@
+--TEST--
+Minor::fromString() rejects invalid values
+--FILE--
+<?php
+
+declare(strict_types=1);
+
+use phpweb\Release;
+
+require_once __DIR__ . '/../../../../src/autoload.php';
+
+$values = [
+    'string-blank' => ' ',
+    'string-empty' => '',
+    'string-leading-zero' => '01',
+    'string-word' => 'foo',
+];
+
+$invalidValues = array_filter($values, static function (string $value): bool {
+    try {
+        Release\Minor::fromString($value);
+    } catch (\InvalidArgumentException) {
+        return true;
+    }
+
+    return false;
+});
+
+var_dump($invalidValues);
+?>
+--EXPECT--
+array(4) {
+  ["string-blank"]=>
+  string(1) " "
+  ["string-empty"]=>
+  string(0) ""
+  ["string-leading-zero"]=>
+  string(2) "01"
+  ["string-word"]=>
+  string(3) "foo"
+}
diff --git a/tests/UserNotes/Release/Minor/from-string-returns-minor.phpt b/tests/UserNotes/Release/Minor/from-string-returns-minor.phpt
new file mode 100644
index 0000000000..b9aa029638
--- /dev/null
+++ b/tests/UserNotes/Release/Minor/from-string-returns-minor.phpt
@@ -0,0 +1,17 @@
+--TEST--
+Minor::fromString() returns Minor
+--FILE--
+<?php
+
+declare(strict_types=1);
+
+use phpweb\Release;
+
+require_once __DIR__ . '/../../../../src/autoload.php';
+
+$minor = Release\Minor::fromString('3');
+
+var_dump($minor->toString());
+?>
+--EXPECT--
+string(1) "3"