diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index ca495d5..6256ff6 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -24,7 +24,7 @@ jobs:
         os:
           - ubuntu-latest
         ocaml-compiler:
-          - "5.1.1"
+          - "5.2.0"
           - "4.14.2"
         local-packages:
           - zarr.opam
@@ -48,7 +48,7 @@ jobs:
           opam exec -- dune build zarr zarr-sync zarr-lwt
       
       - name: setup ocaml-5-specific
-        if: ${{ matrix.ocaml-compiler == '5.1.1' }}
+        if: ${{ matrix.ocaml-compiler == '5.2.0' }}
         run: |
           opam install eio_main --yes
           opam exec -- dune build zarr-eio
@@ -60,29 +60,29 @@ jobs:
           opam exec -- dune exec --instrument-with bisect_ppx --force -- _build/default/zarr-lwt/test/test_lwt.exe -runner sequential -ci true
 
       - name: test ocaml-5-specific libs
-        if: ${{ matrix.ocaml-compiler == '5.1.1' }}
+        if: ${{ matrix.ocaml-compiler == '5.2.0' }}
         run: |
           opam exec -- dune exec --instrument-with bisect_ppx --force -- _build/default/zarr-eio/test/test_eio.exe -runner sequential -ci true
 
       - name: Upload code coverage report
-        if: ${{ matrix.ocaml-compiler == '5.1.1' }}
+        if: ${{ matrix.ocaml-compiler == '5.2.0' }}
         run: opam exec -- bisect-ppx-report send-to Codecov
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
       - name: Build Docs
-        if: ${{ matrix.ocaml-compiler == '5.1.1' }}
+        if: ${{ matrix.ocaml-compiler == '5.2.0' }}
         run: opam exec -- dune build @doc
 
       - name: Upload API Docs artifact
-        if: ${{ matrix.ocaml-compiler == '5.1.1' }}
+        if: ${{ matrix.ocaml-compiler == '5.2.0' }}
         uses: actions/upload-artifact@v3.1.3
         with:
           name: docs
           path: ./_build/default/_doc/_html
 
       - name: Deploy API Docs
-        if: ${{ matrix.ocaml-compiler == '5.1.1' }}
+        if: ${{ matrix.ocaml-compiler == '5.2.0' }}
         uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/dune-project b/dune-project
index 4a62ae6..bcbc163 100644
--- a/dune-project
+++ b/dune-project
@@ -27,7 +27,7 @@
  (depends
    dune
    (ocaml
-     (and (>= 4.14.0) (< 5.2.0)))
+     (and (>= 4.14.0)))
    (yojson (>= 1.6.0))
    (ezgzip (>= 0.2.0))
    (stdint (>= 0.7.2))
@@ -46,7 +46,7 @@
  (depends
    dune
    (ocaml
-     (and (>= 4.14.0) (< 5.2.0)))
+     (and (>= 4.14.0)))
    (zarr (= :version))
    (odoc :with-doc)
    (ounit2 :with-test)
@@ -60,7 +60,7 @@
  (depends
    dune
    (ocaml
-     (and (>= 4.14.0) (< 5.2.0)))
+     (and (>= 4.14.0)))
    (zarr (= :version))
    (lwt (>= 2.5.1))
    (odoc :with-doc)
@@ -75,7 +75,7 @@
  (depends
    dune
    (ocaml
-     (and (>= 5.1.0) (< 5.2.0)))
+     (and (>= 5.1.0)))
    (zarr (= :version))
    (eio_main (>= 1.0))
    (odoc :with-doc)
diff --git a/zarr-eio.opam b/zarr-eio.opam
index 023e16c..9364a9a 100644
--- a/zarr-eio.opam
+++ b/zarr-eio.opam
@@ -10,7 +10,7 @@ doc: "https://zoj613.github.io/zarr-ml"
 bug-reports: "https://github.com/zoj613/zarr-ml/issues"
 depends: [
   "dune" {>= "3.15"}
-  "ocaml" {>= "5.1.0" & < "5.2.0"}
+  "ocaml" {>= "5.1.0"}
   "zarr" {= version}
   "eio_main" {>= "1.0"}
   "odoc" {with-doc}
diff --git a/zarr-lwt.opam b/zarr-lwt.opam
index e565304..4e14ce4 100644
--- a/zarr-lwt.opam
+++ b/zarr-lwt.opam
@@ -10,7 +10,7 @@ doc: "https://zoj613.github.io/zarr-ml"
 bug-reports: "https://github.com/zoj613/zarr-ml/issues"
 depends: [
   "dune" {>= "3.15"}
-  "ocaml" {>= "4.14.0" & < "5.2.0"}
+  "ocaml" {>= "4.14.0"}
   "zarr" {= version}
   "lwt" {>= "2.5.1"}
   "odoc" {with-doc}
diff --git a/zarr-sync.opam b/zarr-sync.opam
index 462ee1a..0006d9a 100644
--- a/zarr-sync.opam
+++ b/zarr-sync.opam
@@ -10,7 +10,7 @@ doc: "https://zoj613.github.io/zarr-ml"
 bug-reports: "https://github.com/zoj613/zarr-ml/issues"
 depends: [
   "dune" {>= "3.15"}
-  "ocaml" {>= "4.14.0" & < "5.2.0"}
+  "ocaml" {>= "4.14.0"}
   "zarr" {= version}
   "odoc" {with-doc}
   "ounit2" {with-test}
diff --git a/zarr.opam b/zarr.opam
index d0cf518..7f49394 100644
--- a/zarr.opam
+++ b/zarr.opam
@@ -15,7 +15,7 @@ doc: "https://zoj613.github.io/zarr-ml"
 bug-reports: "https://github.com/zoj613/zarr-ml/issues"
 depends: [
   "dune" {>= "3.15"}
-  "ocaml" {>= "4.14.0" & < "5.2.0"}
+  "ocaml" {>= "4.14.0"}
   "yojson" {>= "1.6.0"}
   "ezgzip" {>= "0.2.0"}
   "stdint" {>= "0.7.2"}