diff --git a/Makefile b/Makefile
index d0fb71a..6cde81b 100644
--- a/Makefile
+++ b/Makefile
@@ -7,19 +7,15 @@ build :
 
 .PHONY : test
 test :
-	dune runtest --no-buffer -j 1
-
-BISECT_FILES_PATTERN := _build/default/test/bisect*.out
-COVERAGE_DIR := _coverage
+	dune runtest
 
 .PHONY : coverage
 coverage :
-	BISECT_ENABLE=yes dune build @build-test
-	rm -rf $(BISECT_FILES_PATTERN)
-	(cd _build/default/test && ./test.exe)
+	find . -name '*.coverage' | xargs rm -f
+	dune runtest --instrument-with bisect_ppx --force
 	bisect-ppx-report html --expect src/ --do-not-expect src/lambdasoup.ml
 	bisect-ppx-report summary
-	@echo See $(COVERAGE_DIR)/index.html
+	@echo See _coverage/index.html
 
 BS4_MISSING := Beautiful Soup not installed. Skipping Python performance test.
 
diff --git a/lambdasoup.opam b/lambdasoup.opam
index 7988b5f..4aee631 100644
--- a/lambdasoup.opam
+++ b/lambdasoup.opam
@@ -18,7 +18,7 @@ depends: [
   "markup" {>= "1.0.0"}
   "ocaml" {>= "4.02.0"}
 
-  "bisect_ppx" {dev & >= "2.0.0"}
+  "bisect_ppx" {dev & >= "2.5.0"}
   "ounit2" {with-test}
 ]
 
diff --git a/src/dune b/src/dune
index f0ca55a..a49ff48 100644
--- a/src/dune
+++ b/src/dune
@@ -1,20 +1,8 @@
-(* -*- tuareg -*- *)
-
-let preprocess =
-  match Sys.getenv "BISECT_ENABLE" with
-  | "yes" -> "(preprocess (pps bisect_ppx))"
-  | _ -> ""
-  | exception Not_found -> ""
-
-let () = Jbuild_plugin.V1.send @@ {|
-
 (library
  (name soup)
  (public_name lambdasoup)
  (synopsis "Easy functional HTML scraping and manipulation")
  (wrapped false)
  (flags (:standard -w +A -warn-error -3))
- |} ^ preprocess ^ {|
+ (instrumentation (backend bisect_ppx))
  (libraries markup))
-
-|}
diff --git a/test/dune b/test/dune
index 5b806d2..7e82eab 100644
--- a/test/dune
+++ b/test/dune
@@ -3,10 +3,6 @@
  (flags (:standard -w +A))
  (libraries lambdasoup ounit2))
 
-(alias
- (name build-test)
- (deps test.exe (source_tree pages)))
-
 (rule
  (alias runtest)
  (deps (source_tree pages))