diff --git a/composer.json b/composer.json
index 69437ddb..72932e63 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
 	"name": "mediawiki/syntax-highlight_geshi",
 	"description": "Syntax highlighting extension for MediaWiki",
 	"require": {
-		"symfony/process": "~2.6"
+		"symfony/process": "~3.0"
 	},
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "0.9.2",