diff --git a/pkgs/development/ocaml-modules/ocaml-freestanding/default.nix b/pkgs/development/ocaml-modules/ocaml-freestanding/default.nix
index 3588495884f8..85b741dbc199 100644
--- a/pkgs/development/ocaml-modules/ocaml-freestanding/default.nix
+++ b/pkgs/development/ocaml-modules/ocaml-freestanding/default.nix
@@ -64,6 +64,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
+    broken = true; # Not compatible with solo5 ≥ 0.7
     description = "Freestanding OCaml runtime";
     license = licenses.mit;
     maintainers = [ maintainers.sternenseemann ];