diff --git a/pkgs/development/tools/scalafmt/default.nix b/pkgs/development/tools/scalafmt/default.nix
index 5c0fc6f28edf..0c2b94807c0c 100644
--- a/pkgs/development/tools/scalafmt/default.nix
+++ b/pkgs/development/tools/scalafmt/default.nix
@@ -2,7 +2,7 @@
 
 let
   baseName = "scalafmt";
-  version = "2.3.2";
+  version = "2.4.2";
   deps = stdenv.mkDerivation {
     name = "${baseName}-deps-${version}";
     buildCommand = ''
@@ -13,7 +13,7 @@ let
     '';
     outputHashMode = "recursive";
     outputHashAlgo = "sha256";
-    outputHash     = "0q42qa6k4wqnfj710lcarkg8hv7wpvfhvjh9ygil1ah8936xmj72";
+    outputHash     = "0axinxfyycnmxg561n80s90swr6d0pgsw669gvpsk557nhmcclja";
   };
 in
 stdenv.mkDerivation {