diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index bae38f16f56..e4e03040bce 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5506,7 +5506,7 @@ with pkgs;
     isl = isl_0_17;
   }));
 
-  gfortran = gfortran5;
+  gfortran = gfortran6;
 
   gfortran48 = wrapCC (gcc48.cc.override {
     name = "gfortran";