diff --git a/pkgs/development/compilers/ecl/src-for-default.nix b/pkgs/development/compilers/ecl/src-for-default.nix
index 7a90597f5c8a..4de9821c3a71 100644
--- a/pkgs/development/compilers/ecl/src-for-default.nix
+++ b/pkgs/development/compilers/ecl/src-for-default.nix
@@ -1,9 +1,9 @@
 rec {
-   version="10.4.1";
-   name="ecl-10.4.1";
-   hash="0v1wqvvi2zvvmymsgxz7yvqbxf8py6kxani2f4i3bjkayblcypah";
-   url="http://downloads.sourceforge.net/project/ecls/ecls/10.4/ecl-${version}.tar.gz";
-   advertisedUrl="http://downloads.sourceforge.net/project/ecls/ecls/10.4/ecl-10.4.1.tar.gz";
+   version="11.1.1";
+   name="ecl-11.1.1";
+   hash="01rvxpa5cwggq1p39qgjm0sdixx3l6vlnhm2h9qrwji69s3wxb18";
+   url="http://downloads.sourceforge.net/project/ecls/ecls/11.1/ecl-${version}.tar.gz";
+   advertisedUrl="http://downloads.sourceforge.net/project/ecls/ecls/11.1/ecl-11.1.1.tar.gz";
   
   
 }