diff --git a/.editorconfig b/.editorconfig
index 91575c032..347aa2f58 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -17,6 +17,9 @@ trim_trailing_whitespace = false
 indent_size = 2
 indent_style = space
 
+[composer.json]
+indent_size = 4
+
 # Don't perform any clean-up on thirdparty files
 
 [thirdparty/**]
diff --git a/composer.json b/composer.json
index 6cfc5f7b3..d96cd8cdd 100644
--- a/composer.json
+++ b/composer.json
@@ -105,4 +105,4 @@
     },
     "minimum-stability": "dev",
     "prefer-stable": true
-}
\ No newline at end of file
+}