diff --git a/spec/fixtures/dynamic_finders/plugin_version/pressforward/composer_file/package.json b/spec/fixtures/dynamic_finders/plugin_version/pressforward/composer_file/package.json
index caf49ca3c..df548da77 100644
--- a/spec/fixtures/dynamic_finders/plugin_version/pressforward/composer_file/package.json
+++ b/spec/fixtures/dynamic_finders/plugin_version/pressforward/composer_file/package.json
@@ -8,11 +8,11 @@
 		"test": "tests"
 	},
 	"dependencies": {
-		"gulp": "~3.9.0",
+		"gulp": "~4.0.0",
 		"gulp-sass": "~2.0.4"
 	},
 	"devDependencies": {
-		"gulp": "~3.9.0",
+		"gulp": "~4.0.0",
 		"gulp-sass": "~2.0.4"
 	},
 	"scripts": {