diff --git a/pkgs/top-level/php-packages.nix b/pkgs/top-level/php-packages.nix
index 3b7bb5692a22..5066501f281f 100644
--- a/pkgs/top-level/php-packages.nix
+++ b/pkgs/top-level/php-packages.nix
@@ -73,12 +73,12 @@ let
   };
 
   composer = mkDerivation rec {
-    version = "1.8.6";
+    version = "1.9.0";
     pname = "composer";
 
     src = pkgs.fetchurl {
       url = "https://getcomposer.org/download/${version}/composer.phar";
-      sha256 = "0hnm7njab9nsifpb1qbwx54yfpsi00g8mzny11s13ibjvd9rnvxn";
+      sha256 = "0x88bin1c749ajymz2cqjx8660a3wxvndpv4xr6w3pib16fzdpy9";
     };
 
     dontUnpack = true;