diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f7cdd5dde47..7e4beba0af8 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -264,7 +264,7 @@ let
       postUnpackHooks+=(_ensureNewerSources)
       _ensureNewerSources() {
         '${findutils}/bin/find' "$sourceRoot" \
-          '!' -newermt '${year}-01-01' -exec touch -d '${year}-01-02' '{}' '+'
+          '!' -newermt '${year}-01-01' -exec touch -h -d '${year}-01-02' '{}' '+'
       }
     '');