diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 4a25c72..5336e20 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -194,6 +194,10 @@ jobs:
           coverage: "none"
           ini-values: "memory_limit=-1"
 
+      - name: "Downgrade brick/math in lock file for PHP 8.0"
+        run: |
+          composer update brick/math:"0.8.8"
+
       - name: "Install dependencies (Composer)"
         uses: "ramsey/composer-install@v3"
         with:
diff --git a/composer.lock b/composer.lock
index 726f7a2..5001cf3 100644
--- a/composer.lock
+++ b/composer.lock
@@ -8,26 +8,25 @@
     "packages": [
         {
             "name": "brick/math",
-            "version": "0.9.3",
+            "version": "0.14.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/brick/math.git",
-                "reference": "ca57d18f028f84f777b2168cd1911b0dee2343ae"
+                "reference": "f05858549e5f9d7bb45875a75583240a38a281d0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/brick/math/zipball/ca57d18f028f84f777b2168cd1911b0dee2343ae",
-                "reference": "ca57d18f028f84f777b2168cd1911b0dee2343ae",
+                "url": "https://api.github.com/repos/brick/math/zipball/f05858549e5f9d7bb45875a75583240a38a281d0",
+                "reference": "f05858549e5f9d7bb45875a75583240a38a281d0",
                 "shasum": ""
             },
             "require": {
-                "ext-json": "*",
-                "php": "^7.1 || ^8.0"
+                "php": "^8.2"
             },
             "require-dev": {
                 "php-coveralls/php-coveralls": "^2.2",
-                "phpunit/phpunit": "^7.5.15 || ^8.5 || ^9.0",
-                "vimeo/psalm": "4.9.2"
+                "phpstan/phpstan": "2.1.22",
+                "phpunit/phpunit": "^11.5"
             },
             "type": "library",
             "autoload": {
@@ -47,24 +46,25 @@
                 "arithmetic",
                 "bigdecimal",
                 "bignum",
+                "bignumber",
                 "brick",
-                "math"
+                "decimal",
+                "integer",
+                "math",
+                "mathematics",
+                "rational"
             ],
             "support": {
                 "issues": "https://github.com/brick/math/issues",
-                "source": "https://github.com/brick/math/tree/0.9.3"
+                "source": "https://github.com/brick/math/tree/0.14.1"
             },
             "funding": [
                 {
                     "url": "https://github.com/BenMorel",
                     "type": "github"
-                },
-                {
-                    "url": "https://tidelift.com/funding/github/packagist/brick/math",
-                    "type": "tidelift"
                 }
             ],
-            "time": "2021-08-15T20:50:18+00:00"
+            "time": "2025-11-24T14:40:29+00:00"
         },
         {
             "name": "ramsey/collection",
@@ -2633,16 +2633,11 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "2.1.22",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "41600c8379eb5aee63e9413fe9e97273e25d57e4"
-            },
+            "version": "2.1.33",
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/41600c8379eb5aee63e9413fe9e97273e25d57e4",
-                "reference": "41600c8379eb5aee63e9413fe9e97273e25d57e4",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/9e800e6bee7d5bd02784d4c6069b48032d16224f",
+                "reference": "9e800e6bee7d5bd02784d4c6069b48032d16224f",
                 "shasum": ""
             },
             "require": {
@@ -2687,7 +2682,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2025-08-04T19:17:37+00:00"
+            "time": "2025-12-05T10:24:31+00:00"
         },
         {
             "name": "phpstan/phpstan-mockery",
diff --git a/src/Math/BrickMathCalculator.php b/src/Math/BrickMathCalculator.php
index 740391f..649f580 100644
--- a/src/Math/BrickMathCalculator.php
+++ b/src/Math/BrickMathCalculator.php
@@ -49,11 +49,10 @@ final class BrickMathCalculator implements CalculatorInterface
         $sum = BigInteger::of($augend->toString());
 
         foreach ($addends as $addend) {
-            /** @phpstan-ignore possiblyImpure.methodCall */
             $sum = $sum->plus($addend->toString());
         }
 
-        /** @phpstan-ignore possiblyImpure.new, possiblyImpure.methodCall */
+        /** @phpstan-ignore possiblyImpure.new */
         return new IntegerObject((string) $sum);
     }
 
@@ -62,11 +61,10 @@ final class BrickMathCalculator implements CalculatorInterface
         $difference = BigInteger::of($minuend->toString());
 
         foreach ($subtrahends as $subtrahend) {
-            /** @phpstan-ignore possiblyImpure.methodCall */
             $difference = $difference->minus($subtrahend->toString());
         }
 
-        /** @phpstan-ignore possiblyImpure.new, possiblyImpure.methodCall */
+        /** @phpstan-ignore possiblyImpure.new */
         return new IntegerObject((string) $difference);
     }
 
@@ -75,11 +73,10 @@ final class BrickMathCalculator implements CalculatorInterface
         $product = BigInteger::of($multiplicand->toString());
 
         foreach ($multipliers as $multiplier) {
-            /** @phpstan-ignore possiblyImpure.methodCall */
             $product = $product->multipliedBy($multiplier->toString());
         }
 
-        /** @phpstan-ignore possiblyImpure.new, possiblyImpure.methodCall */
+        /** @phpstan-ignore possiblyImpure.new */
         return new IntegerObject((string) $product);
     }
 
@@ -95,23 +92,22 @@ final class BrickMathCalculator implements CalculatorInterface
         $quotient = BigDecimal::of($dividend->toString());
 
         foreach ($divisors as $divisor) {
-            /** @phpstan-ignore possiblyImpure.methodCall */
             $quotient = $quotient->dividedBy($divisor->toString(), $scale, $brickRounding);
         }
 
         if ($scale === 0) {
-            /** @phpstan-ignore possiblyImpure.new, possiblyImpure.methodCall, possiblyImpure.methodCall */
+            /** @phpstan-ignore possiblyImpure.new */
             return new IntegerObject((string) $quotient->toBigInteger());
         }
 
-        /** @phpstan-ignore possiblyImpure.new, possiblyImpure.methodCall */
+        /** @phpstan-ignore possiblyImpure.new */
         return new Decimal((string) $quotient);
     }
 
     public function fromBase(string $value, int $base): IntegerObject
     {
         try {
-            /** @phpstan-ignore possiblyImpure.new, possiblyImpure.methodCall */
+            /** @phpstan-ignore possiblyImpure.new */
             return new IntegerObject((string) BigInteger::fromBase($value, $base));
         } catch (MathException | \InvalidArgumentException $exception) {
             throw new InvalidArgumentException(
@@ -125,7 +121,6 @@ final class BrickMathCalculator implements CalculatorInterface
     public function toBase(IntegerObject $value, int $base): string
     {
         try {
-            /** @phpstan-ignore possiblyImpure.methodCall */
             return BigInteger::of($value->toString())->toBase($base);
         } catch (MathException | \InvalidArgumentException $exception) {
             throw new InvalidArgumentException(