diff --git a/bucket/composer.json b/bucket/composer.json
index f964aef157..f5b847cc3b 100644
--- a/bucket/composer.json
+++ b/bucket/composer.json
@@ -1,8 +1,8 @@
 {
     "homepage": "https://getcomposer.org/",
     "license": "https://github.com/composer/composer/blob/master/LICENSE",
-    "version": "1.4.3",
-    "url": "https://getcomposer.org/download/1.4.3/composer.phar",
+    "version": "1.5.0",
+    "url": "https://getcomposer.org/download/1.5.0/composer.phar",
     "bin": "composer.ps1",
     "persist": "home",
     "env_set": {
@@ -30,7 +30,7 @@
     "notes": [
         "'composer selfupdate' is aliased to 'scoop update composer'"
     ],
-    "hash": "03fc40c59e1e5711d61d6f340e9159ac94701107e0fe05aa795b611d004bdf35",
+    "hash": "8a9f570241f1f858529c13f4d09d38b3379fe1a1d27cb74bc71093f1a8f1b225",
     "checkver": {
         "github": "https://github.com/composer/composer"
     },