diff --git a/README.md b/README.md
index b0ecc82..bbd19f6 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ if ($validator->fails()) {
 
 ##### Error messages
 
-To get the rows with validation errors and there errors. The validator expose `errors` method that can be used like so `$validator->errors()`.
+To get the rows with validation errors and their errors. The validator expose `errors` method that can be used like so `$validator->errors()`.
 
 You can also customize the error messages for different validation rules and different attributes by passing a message array to the validator like so:
 
@@ -310,4 +310,4 @@ The project run's automatic checks to make sure that the Symfony code standards
 So, before pushing or making any pull request run the below command:
 
 * `composer test`: For running test
-* `composer fixlint`: For running php-cs-fixer to fix linting errors
+* `composer fix-lint`: For running php-cs-fixer to fix linting errors
diff --git a/docker/php/Dockerfile.php7 b/docker/php/Dockerfile.php7
index b8c27d6..dd09ff5 100644
--- a/docker/php/Dockerfile.php7
+++ b/docker/php/Dockerfile.php7
@@ -10,7 +10,7 @@ RUN apt-get update && apt-get install -y \
     zip \
     unzip
 
-RUN pecl install xdebug \
+RUN pecl install xdebug-3.1.5 \
     && docker-php-ext-enable xdebug
 
 # Get latest Composer