diff --git a/pkgs/development/compilers/gcl/2.6.13-pre.nix b/pkgs/development/compilers/gcl/2.6.13-pre.nix
index 50efbe5d3c54..f967deb9a2ce 100644
--- a/pkgs/development/compilers/gcl/2.6.13-pre.nix
+++ b/pkgs/development/compilers/gcl/2.6.13-pre.nix
@@ -1,5 +1,5 @@
 { lib, stdenv, fetchgit, mpfr, m4, binutils, emacs, zlib, which
-, texinfo, libX11, xorgproto, libXi, gmp, readline, strace
+, texinfo, libX11, xorgproto, libXi, gmp, readline
 , libXext, libXt, libXaw, libXmu } :
 
 assert stdenv ? cc ;
@@ -7,34 +7,32 @@ assert stdenv.cc.isGNU ;
 assert stdenv.cc ? libc ;
 assert stdenv.cc.libc != null ;
 
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   pname = "gcl";
-  version = "2.6.13pre50";
+  version = "2.6.13pre124";
 
   src = fetchgit {
-    sha256 = "0vpxb6z5g9fjavrgx8gz8fsjvskfz64f63qibh5s00fvvndlwi88";
+    sha256 = "sha256-e4cUQlNSfdz+B3urlZ82pf7fTc6aoloUyDDorAUi5kc=";
     url = "https://git.savannah.gnu.org/r/gcl.git";
-    rev = "refs/tags/Version_2_6_13pre50";
+    rev = "refs/tags/Version_${builtins.replaceStrings ["."] ["_"] version}";
   };
 
   postPatch = ''
     sed -e 's/<= obj-date/<= (if (= 0 obj-date) 1 obj-date)/' -i lsp/make.lisp
-  ''
-  # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=902475
-  + ''
-    substituteInPlace h/elf64_i386_reloc.h \
-      --replace 'case R_X86_64_PC32:' 'case R_X86_64_PC32: case R_X86_64_PLT32:'
   '';
 
   sourceRoot = "gcl/gcl";
 
+  # breaks when compiling in parallel
+  enableParallelBuilding = false;
+
   patches = [];
 
   buildInputs = [
     mpfr m4 binutils emacs gmp
     libX11 xorgproto libXi
     libXext libXt libXaw libXmu
-    zlib which texinfo readline strace
+    zlib which texinfo readline
   ];
 
   configureFlags = [