diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e85ad04b4..f9e099793 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,8 +17,8 @@ jobs:
   build:
     strategy:
       matrix:
-        ocaml: [4.14.x]
-        os: [macOS-latest, ubuntu-latest]
+        ocaml: [4.14.x, 4.13.x, 4.12.x]
+        os: [ubuntu-latest]
       fail-fast: false
 
     runs-on: ${{ matrix.os }}
@@ -41,6 +41,26 @@ jobs:
       - name: 🧱 Build coq-lsp
         run: opam exec -- make build
 
+  osx:
+    runs-on: macOS-latest
+    steps:
+      - name: 🔭 Checkout code
+        uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: 🐫 Setup OCaml
+        uses: ocaml/setup-ocaml@v2
+        with:
+          ocaml-compiler: 4.14.x
+          dune-cache: true
+
+      - name: 🐫🐪🐫 Get dependencies
+        run: opam exec -- make opam-deps
+
+      - name: 🧱 Build coq-lsp
+        run: opam exec -- make build
+
   client-compile:
     runs-on: ubuntu-latest
     defaults:
diff --git a/CHANGES.md b/CHANGES.md
index fb433498f..ae6950b2b 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -8,6 +8,7 @@
  - Use LSP functions for client-side logging (@ejgallego , #87)
  - Log `_CoqProject` detection settings to client window (@ejgallego, #88)
  - Use plugin include paths from `_CoqProject` (@ejgallego, #88)
+ - Support OCaml >= 4.12 (@ejgallego, #93)
 
 # coq-lsp 0.1.0: Memory
 -----------------------
diff --git a/coq-lsp.opam b/coq-lsp.opam
index a61ae3f0d..4bee93a02 100644
--- a/coq-lsp.opam
+++ b/coq-lsp.opam
@@ -15,8 +15,8 @@ license: "LGPL-2.1-or-later"
 doc: "https://coq.github.io/coq-lsp/"
 
 depends: [
-  "ocaml"        {         >= "4.13.1" }
-  "dune"         { build & >= "3.0.2" & < "3.4" }
+  "ocaml"        {         >= "4.12.0" }
+  "dune"         { build & >= "3.5.0"  }
 
   # Not yet required, install Coq deps instead
   # "coq"          {         >= "8.17"   }
@@ -26,13 +26,13 @@ depends: [
   "zarith" {>= "1.11"}
 
   # serapi deps
-  "sexplib"             {           >= "v0.13.0"             }
-  "ppx_deriving"        {           >= "4.2.1"               }
-  "ppx_sexp_conv"       {           >= "v0.13.0" & < "v0.16" }
-  "ppx_compare"         {           >= "v0.13.0" & < "v0.16" }
-  "ppx_hash"            {           >= "v0.13.0" & < "v0.16" }
-  "ppx_import"          { build   & >= "1.5-3"               }
-  "ppx_deriving_yojson" {           >= "3.4"                 }
+  "sexplib"             {           >= "v0.13.0"  }
+  "ppx_deriving"        {           >= "4.2.1"    }
+  "ppx_sexp_conv"       {           >= "v0.13.0"  }
+  "ppx_compare"         {           >= "v0.13.0"  }
+  "ppx_hash"            {           >= "v0.13.0"  }
+  "ppx_import"          { build   & >= "1.5-3"    }
+  "ppx_deriving_yojson" {           >= "3.4"      }
 
   # lsp dependencies
   "cmdliner"     { >= "1.1.0" }
diff --git a/dune-project b/dune-project
index 68da3def7..7bf79ee82 100644
--- a/dune-project
+++ b/dune-project
@@ -1,3 +1,5 @@
-(lang dune 2.5)
+(lang dune 3.2)
+; Can't bump to dune > 3.2 due to https://github.com/ocaml/dune/issues/6644
+
 (name coq-lsp)