diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 05a7859..c587d29 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,7 +15,7 @@ jobs:
           - ubuntu-latest
           - macos-latest
         ocaml-compiler:
-          - ocaml-base-compiler.5.0.0~beta1
+          - 5.0.x
           - ocaml-variants.5.1.0+trunk
 
     runs-on: ${{ matrix.os }}
@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Get latest OCaml commit hash
         id: multicore_hash
diff --git a/domainslib.opam b/domainslib.opam
index 9e5c86f..46fc31b 100644
--- a/domainslib.opam
+++ b/domainslib.opam
@@ -1,23 +1,34 @@
+# This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-maintainer: "KC Sivaramakrishnan <kc@kcsrk.info>"
+synopsis: "Parallel Structures over Domains for Multicore OCaml"
+maintainer: ["KC Sivaramakrishnan <kc@kcsrk.info>"]
 authors: ["KC Sivaramakrishnan <kc@kcsrk.info>"]
+license: "ISC"
 homepage: "https://github.com/ocaml-multicore/domainslib"
 doc: "https://kayceesrk.github.io/domainslib/doc"
-synopsis: "Parallel Structures over Domains for Multicore OCaml"
-license: "ISC"
-dev-repo: "git+https://github.com/ocaml-multicore/domainslib.git"
 bug-reports: "https://github.com/ocaml-multicore/domainslib/issues"
-tags: []
 depends: [
-  "ocaml" {>= "5.00"}
   "dune" {>= "3.0"}
-  "lockfree" { >= "0.2.0"}
-  "mirage-clock-unix" {with-test}
+  "ocaml" {>= "5.0"}
+  "lockfree" {>= "0.2.0"}
+  "mirage-clock-unix" {with-test & >= "4.2.0"}
   "qcheck-core" {with-test & >= "0.20"}
   "qcheck-multicoretests-util" {with-test & >= "0.1"}
   "qcheck-stm" {with-test & >= "0.1"}
+  "odoc" {with-doc}
 ]
-depopts: []
 build: [
-  "dune" "build" "-p" name
+  ["dune" "subst"] {dev}
+  [
+    "dune"
+    "build"
+    "-p"
+    name
+    "-j"
+    jobs
+    "@install"
+    "@runtest" {with-test}
+    "@doc" {with-doc}
+  ]
 ]
+dev-repo: "git+https://github.com/ocaml-multicore/domainslib.git"
diff --git a/dune-project b/dune-project
index 78a65eb..bcd2a8b 100644
--- a/dune-project
+++ b/dune-project
@@ -1,2 +1,21 @@
-(lang dune 1.8)
+(lang dune 3.0)
 (name domainslib)
+(formatting disabled)
+(generate_opam_files true)
+
+(source (github ocaml-multicore/domainslib))
+(authors "KC Sivaramakrishnan <kc@kcsrk.info>")
+(maintainers "KC Sivaramakrishnan <kc@kcsrk.info>")
+(documentation "https://kayceesrk.github.io/domainslib/doc")
+(license "ISC")
+
+(package
+ (name domainslib)
+ (synopsis "Parallel Structures over Domains for Multicore OCaml")
+ (depends
+  (ocaml (>= "5.0"))
+  (lockfree (>= "0.2.0"))
+  (mirage-clock-unix (and :with-test (>= "4.2.0")))
+  (qcheck-core (and :with-test (>= "0.20")))
+  (qcheck-multicoretests-util (and :with-test (>= "0.1")))
+  (qcheck-stm (and :with-test (>= "0.1")))))
diff --git a/test/LU_decomposition_multicore.ml b/test/LU_decomposition_multicore.ml
index ab123ee..f203498 100644
--- a/test/LU_decomposition_multicore.ml
+++ b/test/LU_decomposition_multicore.ml
@@ -5,13 +5,6 @@ let mat_size = try int_of_string Sys.argv.(2) with _ -> 1200
 let k = Domain.DLS.new_key Random.State.make_self_init
 
 module SquareMatrix = struct
-
-  let create f : float array =
-    let fa = Array.create_float (mat_size * mat_size) in
-    for i = 0 to mat_size * mat_size - 1 do
-      fa.(i) <- f (i / mat_size) (i mod mat_size)
-    done;
-    fa
   let parallel_create pool f : float array =
     let fa = Array.create_float (mat_size * mat_size) in
     T.parallel_for pool ~start:0 ~finish:( mat_size * mat_size - 1)
diff --git a/test/backtrace.ml b/test/backtrace.ml
index 7fb7e56..2d7c312 100644
--- a/test/backtrace.ml
+++ b/test/backtrace.ml
@@ -31,6 +31,7 @@ let _ =
     let open Printexc in
     let bt = get_raw_backtrace () in
     let bt_slot_arr = Option.get (backtrace_slots bt) in
-    assert (Option.get (Slot.name bt_slot_arr.(1)) = "Backtrace.foo");
+    let name = Option.get (Slot.name bt_slot_arr.(1)) in
+    assert (name = "Backtrace.foo" || name = "Dune__exe__Backtrace.foo");
     let s = raw_backtrace_to_string bt in
     print_string s
diff --git a/test/fib_par.ml b/test/fib_par.ml
index 77e944b..7f7d701 100644
--- a/test/fib_par.ml
+++ b/test/fib_par.ml
@@ -19,3 +19,5 @@ let main =
   let res = T.run pool (fun _ -> fib_par pool n) in
   T.teardown_pool pool;
   Printf.printf "fib(%d) = %d\n" n res
+
+let () = main