diff --git a/README.md b/README.md
index 7ece1b9..da93bac 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ Add an entry for "wellrested/wellrested" to your composer.json file's `require`
 ```json
 {
     "require": {
-        "wellrested/wellrested": "~3.1"
+        "wellrested/wellrested": "^4"
     }
 }
 ```
diff --git a/docker/php/Dockerfile b/docker/php/Dockerfile
index 9f25533..6fe1761 100644
--- a/docker/php/Dockerfile
+++ b/docker/php/Dockerfile
@@ -25,7 +25,6 @@ RUN chmod +x /usr/local/bin/dumb-init
 # Create a directory for project sources and user's home directory
 RUN mkdir /usr/local/src/wellrested && \
   chown -R www-data:www-data /usr/local/src/wellrested && \
-  mkdir /var/www && \
   chown -R www-data:www-data /var/www
 
 COPY ./src /usr/local/src/wellrested/src
diff --git a/docs/source/index.rst b/docs/source/index.rst
index cdbb811..6491e5d 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -61,7 +61,7 @@ The site will also provide an ``X-example: hello world`` using dedicated middlew
 
     require_once 'vendor/autoload.php';
 
-    // Create a handler that will construct and return a response. We'll 
+    // Create a handler that will construct and return a response. We'll
     // register this handler with a server and router below.
     class HelloHandler implements RequestHandlerInterface
     {
@@ -143,6 +143,6 @@ Contents
 .. _PSR-7: https://www.php-fig.org/psr/psr-7/
 .. _PSR-15: https://www.php-fig.org/psr/psr-15/
 .. _factory functions: handlers-and-middleware.html#factory-functions
-.. _middleware: handles-and-middleware.html
+.. _middleware: handlers-and-middleware.html
 .. _router: router.html
 .. _URI Templates: uri-templates.html