diff --git a/detect/dune b/detect/dune
index 79de403..002403b 100644
--- a/detect/dune
+++ b/detect/dune
@@ -4,11 +4,13 @@
 
 (rule
  (targets ogg_available ogg_c_flags.sexp ogg_c_library_flags.sexp)
+ (deps (universe))
  (action
   (run ./detect.exe --context %{context_name} ogg ogg)))
 
 (rule
  (targets flac_available flac_c_flags.sexp flac_c_library_flags.sexp)
+ (deps (universe))
  (action
   (run ./detect.exe --context %{context_name} flac flac)))
 
@@ -17,11 +19,13 @@
   flac_ogg_available
   flac_ogg_c_flags.sexp
   flac_ogg_c_library_flags.sexp)
+ (deps (universe))
  (action
   (run ./detect.exe --context %{context_name} flac_ogg ogg flac)))
 
 (rule
  (targets vorbis_available vorbis_c_flags.sexp vorbis_c_library_flags.sexp)
+ (deps (universe))
  (action
   (run
    ./detect.exe
@@ -34,15 +38,18 @@
 
 (rule
  (targets opus_available opus_c_flags.sexp opus_c_library_flags.sexp)
+ (deps (universe))
  (action
   (run ./detect.exe --context %{context_name} opus opus ogg)))
 
 (rule
  (targets speex_available speex_c_flags.sexp speex_c_library_flags.sexp)
+ (deps (universe))
  (action
   (run ./detect.exe --context %{context_name} speex speex ogg)))
 
 (rule
  (targets theora_available theora_c_flags.sexp theora_c_library_flags.sexp)
+ (deps (universe))
  (action
   (run ./detect.exe --context %{context_name} theora theoradec theoraenc)))