diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9520aaf..c513041 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -18,7 +18,7 @@ You will then need to run a composer installation:
 ```sh
 cd ChangeSet
 curl -s https://getcomposer.org/installer | php
-php composer.phar update --dev
+php composer.phar update
 ```
 
 ## Testing
@@ -29,4 +29,4 @@ The PHPUnit version to be used is the one installed as a dev- dependency via com
 ./vendor/bin/phpunit
 ```
 
-Accepted coverage for new contributions is 80%. Any contribution not satisfying this requirement won't be merged.
\ No newline at end of file
+Accepted coverage for new contributions is 80%. Any contribution not satisfying this requirement won't be merged.