diff --git a/pkgs/development/compilers/ecl/src-for-default.nix b/pkgs/development/compilers/ecl/src-for-default.nix
index 4de9821c3a7..1baaf4bbec4 100644
--- a/pkgs/development/compilers/ecl/src-for-default.nix
+++ b/pkgs/development/compilers/ecl/src-for-default.nix
@@ -1,9 +1,7 @@
 rec {
-   version="11.1.1";
-   name="ecl-11.1.1";
-   hash="01rvxpa5cwggq1p39qgjm0sdixx3l6vlnhm2h9qrwji69s3wxb18";
-   url="http://downloads.sourceforge.net/project/ecls/ecls/11.1/ecl-${version}.tar.gz";
-   advertisedUrl="http://downloads.sourceforge.net/project/ecls/ecls/11.1/ecl-11.1.1.tar.gz";
-  
-  
+   version="12.2.1";
+   name="ecl-12.2.1";
+   hash="dbb3f83c27f3d2565ca22c1c6b4ab497bbfdd0d0a7b09dee76338f378621f091";
+   url="http://downloads.sourceforge.net/project/ecls/ecls/12.2/ecl-${version}.tgz";
+   advertisedUrl="http://downloads.sourceforge.net/project/ecls/ecls/12.2/ecl-12.2.1.tgz";
 }