diff --git a/pkgs/development/php-packages/psalm/default.nix b/pkgs/development/php-packages/psalm/default.nix
index 129fbaf4ed3..272ed24f51a 100644
--- a/pkgs/development/php-packages/psalm/default.nix
+++ b/pkgs/development/php-packages/psalm/default.nix
@@ -1,14 +1,14 @@
 { mkDerivation, fetchurl, pkgs, lib, php }:
 let
   pname = "psalm";
-  version = "4.1.1";
+  version = "4.2.1";
 in
 mkDerivation {
   inherit pname version;
 
   src = fetchurl {
     url = "https://github.com/vimeo/psalm/releases/download/${version}/psalm.phar";
-    sha256 = "05qjrg8wxlqxihv7xl31n73ygx7ykvcpbh2gq958iin4rr1bcy88";
+    sha256 = "0g6s3bn8aaggpqjgr0bqchgkgb4my5ksfycyyqy7nrly2bgn1kbz";
   };
 
   phases = [ "installPhase" ];