diff --git a/pkgs/development/php-packages/composer/2.0.nix b/pkgs/development/php-packages/composer/1.x.nix
similarity index 89%
rename from pkgs/development/php-packages/composer/2.0.nix
rename to pkgs/development/php-packages/composer/1.x.nix
index d704b5f9a27d..4660da9532dc 100644
--- a/pkgs/development/php-packages/composer/2.0.nix
+++ b/pkgs/development/php-packages/composer/1.x.nix
@@ -1,14 +1,14 @@
 { mkDerivation, fetchurl, makeWrapper, unzip, lib, php }:
 let
   pname = "composer";
-  version = "2.0.11";
+  version = "1.10.15";
 in
 mkDerivation {
   inherit pname version;
 
   src = fetchurl {
     url = "https://getcomposer.org/download/${version}/composer.phar";
-    sha256 = "sha256-6r8pFwcglqlGeRk3YlATGeYh4rNppKElaywn9OaYRHc=";
+    sha256 = "1shsxsrc2kq74s1jbq3njn9wzidcz7ak66n9vyz8z8d0hqpg37d6";
   };
 
   dontUnpack = true;
diff --git a/pkgs/development/php-packages/composer/default.nix b/pkgs/development/php-packages/composer/default.nix
index 4660da9532dc..d704b5f9a27d 100644
--- a/pkgs/development/php-packages/composer/default.nix
+++ b/pkgs/development/php-packages/composer/default.nix
@@ -1,14 +1,14 @@
 { mkDerivation, fetchurl, makeWrapper, unzip, lib, php }:
 let
   pname = "composer";
-  version = "1.10.15";
+  version = "2.0.11";
 in
 mkDerivation {
   inherit pname version;
 
   src = fetchurl {
     url = "https://getcomposer.org/download/${version}/composer.phar";
-    sha256 = "1shsxsrc2kq74s1jbq3njn9wzidcz7ak66n9vyz8z8d0hqpg37d6";
+    sha256 = "sha256-6r8pFwcglqlGeRk3YlATGeYh4rNppKElaywn9OaYRHc=";
   };
 
   dontUnpack = true;
diff --git a/pkgs/top-level/php-packages.nix b/pkgs/top-level/php-packages.nix
index 3df697d3d560..c9c4414f2fbf 100644
--- a/pkgs/top-level/php-packages.nix
+++ b/pkgs/top-level/php-packages.nix
@@ -29,7 +29,7 @@ lib.makeScope pkgs.newScope (self: with self; {
 
     composer = callPackage ../development/php-packages/composer { };
 
-    composer2 = callPackage ../development/php-packages/composer/2.0.nix { };
+    composer1 = callPackage ../development/php-packages/composer/1.x.nix { };
 
     php-cs-fixer = callPackage ../development/php-packages/php-cs-fixer { };