diff --git a/CHANGELOG.md b/CHANGELOG.md
index f0a858e..5ea37d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-## [0.8.0] 2020-11-26
+## [0.9.0] 2021-12-10
+### Added
+- Compatibility with PHP 8.1
+
+### Changed
+- Fix #54 to be able to build a melodiia application on any PAAS service
+
+## [0.8.0] 2021-11-26
 ### Added
 - Add json-api header in responses
 
diff --git a/docs/config-reference.md b/docs/config-reference.md
index 88b71f0..b90e372 100644
--- a/docs/config-reference.md
+++ b/docs/config-reference.md
@@ -9,6 +9,7 @@ melodiia:
         # Define as much APIs you want here.
         main:
             base_path: /api/v1
+            openapi_path: /path/to/your/openapi/doc.yaml
             pagination:
                 # Using this query attribute you can change the max per page
                 max_per_page_attribute: max_per_page
diff --git a/docs/getting-started.md b/docs/getting-started.md
index 3489e24..f4de21b 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -113,11 +113,23 @@ to configure the OpenAPI documentation in a good way was a serious pain and was
 But it comes with some help to build your documentation:
 1. Run `bin/console assets:insall`
 2. Create a file `documentation.yml` (the `config` folder seems like a good location)
-2. Add the following routing to your configuration
+3. Add your documentation file in the global melodiia configuration and configure your documentation route
 
 ```yaml
-# The documentation should be available only in dev environment
-# routing_dev.yaml
+# /config/packages/melodiia.yaml
+melodiia:
+    apis:
+        main:
+            # Required all the time! Do not forget this!
+            base_path:    /api/v1
+            
+            # This is what we are looking for here:
+            openapi_path: /path/to/your/openapi/doc.yaml
+```
+
+```yaml
+# The documentation should be available only in dev environment in some cases
+# /config/routing_dev.yaml
 documentation:
     path: /documentation
     controller: 'melodiia.documentation'
diff --git a/src/DependencyInjection/MelodiiaExtension.php b/src/DependencyInjection/MelodiiaExtension.php
index 2d40cd0..298e385 100644
--- a/src/DependencyInjection/MelodiiaExtension.php
+++ b/src/DependencyInjection/MelodiiaExtension.php
@@ -50,7 +50,7 @@ public function load(array $configs, ContainerBuilder $container)
             // This is just a helpful layer in case some dependency is missing, because twig is optional.
             foreach ($config['api'] as $endpoint) {
                 if (!empty($endpoint[MelodiiaConfiguration::CONFIGURATION_OPENAPI_PATH])) {
-                    throw new DependencyMissingException('You specified a documentation path but twig is not activated. Melodiia will not be able to render your documentation.');
+                    throw new DependencyMissingException('You specified a documentation path but twig is not installed. Melodiia will not be able to render your documentation.');
                 }
             }
         }