diff --git a/composer.json b/composer.json
index ad08edc..48d0fd8 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
         "bin-dir": "bin"
     },
     "autoload": {
-        "psr-0": {"": "src"}
+        "psr-4": {"": "src"}
     },
     "extra": {
         "branch-alias": {