diff --git a/ocaml/database/dune b/ocaml/database/dune
index 0b0c71425ff..734831adf58 100644
--- a/ocaml/database/dune
+++ b/ocaml/database/dune
@@ -1,6 +1,6 @@
 (ocamllex db_filter_lex)
 
-(ocamlyacc db_filter_parse)
+(menhir (modules db_filter_parse))
 
 (library
   (name xapi_schema)
diff --git a/ocaml/xenopsd/cli/dune b/ocaml/xenopsd/cli/dune
index 220d5aae2e2..b194b10323c 100644
--- a/ocaml/xenopsd/cli/dune
+++ b/ocaml/xenopsd/cli/dune
@@ -1,4 +1,4 @@
-(ocamlyacc xn_cfg_parser)
+(menhir (modules xn_cfg_parser))
 (ocamllex xn_cfg_lexer)
 
 (executable