diff --git a/Makefile b/Makefile
index f4893de..f771a31 100644
--- a/Makefile
+++ b/Makefile
@@ -6,8 +6,7 @@ clean:
 
 coverage: clean
 	@BISECT_ENABLE=YES dune runtest --force
-	@bisect-ppx-report -I _build/default/ -html _coverage/ \
-	  `find . -name 'bisect*.out'`
+	@bisect-ppx-report html
 
 test:
 	@dune runtest --force
diff --git a/easy_xlsx/src/dune b/easy_xlsx/src/dune
index 7807dd7..ccd57f0 100644
--- a/easy_xlsx/src/dune
+++ b/easy_xlsx/src/dune
@@ -2,4 +2,4 @@
   (name easy_xlsx)
   (public_name easy_xlsx)
   (libraries camlzip ptime spreadsheetml str)
-  (preprocess (pps ppx_jane bisect_ppx -conditional)))
+  (preprocess (pps ppx_jane bisect_ppx)))
diff --git a/easy_xlsx/test/test_easy_xlsx_docs.ml b/easy_xlsx/test/test_easy_xlsx_docs.ml
index 0f41e7c..feadee4 100644
--- a/easy_xlsx/test/test_easy_xlsx_docs.ml
+++ b/easy_xlsx/test/test_easy_xlsx_docs.ml
@@ -27,7 +27,7 @@ let pp_diff fmt (exp, real) =
     | exp, real ->
       let exp_row = List.hd exp in
       let real_row = List.hd real in
-      if Option.equal (List.equal ~equal:String.equal) exp_row real_row then
+      if Option.equal (List.equal String.equal) exp_row real_row then
         print_opt_row ' ' exp_row
       else begin
         print_opt_row '-' exp_row;
diff --git a/open_packaging.opam b/open_packaging.opam
index 7cf19f0..65e7aa0 100644
--- a/open_packaging.opam
+++ b/open_packaging.opam
@@ -12,7 +12,7 @@ build: [
 ]
 
 depends: [
-  "base" {= "v0.11.1"}
+  "base" {= "v0.14.1"}
   "ocaml" {>= "4.04.2"}
   "ppx_jane"
   "sexplib"
diff --git a/open_packaging/src/dune b/open_packaging/src/dune
index a84b06b..c5fec7b 100644
--- a/open_packaging/src/dune
+++ b/open_packaging/src/dune
@@ -3,4 +3,4 @@
   (public_name open_packaging)
   (libraries base sexplib stdint xml-light)
   (flags (:standard -w -47))
-  (preprocess (pps ppx_jane bisect_ppx -conditional)))
+  (preprocess (pps ppx_jane bisect_ppx)))
diff --git a/spreadsheetml/src/dune b/spreadsheetml/src/dune
index 52f3821..284cdb2 100644
--- a/spreadsheetml/src/dune
+++ b/spreadsheetml/src/dune
@@ -3,4 +3,4 @@
   (public_name spreadsheetml)
   (libraries open_packaging)
   (flags (:standard -w -47))
-  (preprocess (pps ppx_jane bisect_ppx -conditional)))
+  (preprocess (pps ppx_jane bisect_ppx)))