diff --git a/pkgs/servers/sql/postgresql/ext/pg_ed25519.nix b/pkgs/servers/sql/postgresql/ext/pg_ed25519.nix
index 010f8f819da94..57bf1b62e15f8 100644
--- a/pkgs/servers/sql/postgresql/ext/pg_ed25519.nix
+++ b/pkgs/servers/sql/postgresql/ext/pg_ed25519.nix
@@ -27,6 +27,8 @@ stdenv.mkDerivation rec {
     maintainers = [ maintainers.renzo ];
     platforms = postgresql.meta.platforms;
     license = licenses.mit;
+    # Broken on darwin and linux (JIT) with no upstream fix available.
+    broken = lib.versionAtLeast postgresql.version "16" && stdenv.cc.isClang;
   };
 }