diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 95804ce..6996683 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -33,3 +33,11 @@ Coding standard of this project is based on [Doctrine CS](https://github.com/doc
 ```sh
 ./vendor/bin/phpcs
 ```
+
+## Running benchmarks
+
+Benchmarks are run via phpbench:
+
+```sh
+./vendor/bin/phpbench run
+```
diff --git a/benchmarks/HugeSchemaBench.php b/benchmarks/HugeSchemaBench.php
index 31073e2..19d6837 100644
--- a/benchmarks/HugeSchemaBench.php
+++ b/benchmarks/HugeSchemaBench.php
@@ -57,13 +57,13 @@ class HugeSchemaBench
 
     public function benchSmallQuery()
     {
-        $result = GraphQL::execute($this->schema, $this->smallQuery);
+        $result = GraphQL::executeQuery($this->schema, $this->smallQuery);
     }
 
     public function benchSmallQueryLazy()
     {
         $schema = $this->createLazySchema();
-        $result = GraphQL::execute($schema, $this->smallQuery);
+        $result = GraphQL::executeQuery($schema, $this->smallQuery);
     }
 
     private function createLazySchema()
diff --git a/benchmarks/StarWarsBench.php b/benchmarks/StarWarsBench.php
index 1690808..faa0a97 100644
--- a/benchmarks/StarWarsBench.php
+++ b/benchmarks/StarWarsBench.php
@@ -35,7 +35,7 @@ class StarWarsBench
         }
         ';
 
-        GraphQL::execute(
+        GraphQL::executeQuery(
             StarWarsSchema::build(),
             $q
         );
@@ -57,7 +57,7 @@ class StarWarsBench
           }
         }
         ';
-        GraphQL::execute(
+        GraphQL::executeQuery(
             StarWarsSchema::build(),
             $q
         );
@@ -81,7 +81,7 @@ class StarWarsBench
         }
         ';
 
-        GraphQL::execute(
+        GraphQL::executeQuery(
             StarWarsSchema::build(),
             $q
         );
@@ -89,7 +89,7 @@ class StarWarsBench
 
     public function benchStarWarsIntrospectionQuery()
     {
-        GraphQL::execute(
+        GraphQL::executeQuery(
             StarWarsSchema::build(),
             $this->introQuery
         );
diff --git a/composer.json b/composer.json
index f33c497..c536480 100644
--- a/composer.json
+++ b/composer.json
@@ -15,6 +15,7 @@
   },
   "require-dev": {
     "doctrine/coding-standard": "^4.0",
+    "phpbench/phpbench": "^0.14.0",
     "phpstan/phpstan": "^0.10.3",
     "phpstan/phpstan-phpunit": "^0.10.0",
     "phpunit/phpunit": "^7.2",
diff --git a/examples/02-shorthand/graphql.php b/examples/02-shorthand/graphql.php
index 7e07ffa..e958955 100644
--- a/examples/02-shorthand/graphql.php
+++ b/examples/02-shorthand/graphql.php
@@ -18,7 +18,7 @@ try {
     $query = $input['query'];
     $variableValues = isset($input['variables']) ? $input['variables'] : null;
 
-    $result = GraphQL::execute($schema, $query, $rootValue, null, $variableValues);
+    $result = GraphQL::executeQuery($schema, $query, $rootValue, null, $variableValues);
 } catch (\Exception $e) {
     $result = [
         'error' => [