diff --git a/pkgs/development/ocaml-modules/dream/default.nix b/pkgs/development/ocaml-modules/dream/default.nix
new file mode 100644
index 0000000000000..d359935079381
--- /dev/null
+++ b/pkgs/development/ocaml-modules/dream/default.nix
@@ -0,0 +1,67 @@
+{
+  lib,
+  buildDunePackage,
+  dream-pure,
+  lwt_ppx,
+  camlp-streams,
+  caqti-lwt,
+  cstruct,
+  digestif,
+  dream-httpaf,
+  graphql-lwt,
+  h2-lwt-unix,
+  httpun-lwt-unix,
+  httpun-ws,
+  lambdasoup,
+  lwt_ssl,
+  magic-mime,
+  markup,
+  mirage-clock,
+  mirage-crypto-rng,
+  mirage-crypto-rng-lwt,
+  multipart_form-lwt,
+  ssl,
+  unstrctrd,
+  uri,
+  yojson,
+}:
+
+buildDunePackage {
+  pname = "dream";
+
+  inherit (dream-pure) version src;
+
+  # Compatibility with httpun 0.2.0 and h2 0.13
+  patches = [ ./httpun.patch ];
+
+  buildInputs = [ lwt_ppx ];
+
+  propagatedBuildInputs = [
+    camlp-streams
+    caqti-lwt
+    cstruct
+    digestif
+    dream-httpaf
+    dream-pure
+    graphql-lwt
+    h2-lwt-unix
+    httpun-lwt-unix
+    httpun-ws
+    lambdasoup
+    lwt_ssl
+    magic-mime
+    markup
+    mirage-clock
+    mirage-crypto-rng
+    mirage-crypto-rng-lwt
+    multipart_form-lwt
+    ssl
+    unstrctrd
+    uri
+    yojson
+  ];
+
+  meta = dream-pure.meta // {
+    description = "Tidy, feature-complete Web framework";
+  };
+}
diff --git a/pkgs/development/ocaml-modules/dream/httpaf.nix b/pkgs/development/ocaml-modules/dream/httpaf.nix
new file mode 100644
index 0000000000000..6ba186bceb7a7
--- /dev/null
+++ b/pkgs/development/ocaml-modules/dream/httpaf.nix
@@ -0,0 +1,23 @@
+{
+  lib,
+  buildDunePackage,
+  dream-pure,
+  lwt_ppx,
+  httpun-ws,
+}:
+
+buildDunePackage {
+  pname = "dream-httpaf";
+
+  inherit (dream-pure) version src;
+
+  buildInputs = [ lwt_ppx ];
+  propagatedBuildInputs = [
+    dream-pure
+    httpun-ws
+  ];
+
+  meta = dream-pure.meta // {
+    description = "Shared http/af stack for Dream (server) and Hyper (client)";
+  };
+}
diff --git a/pkgs/development/ocaml-modules/dream/httpun.patch b/pkgs/development/ocaml-modules/dream/httpun.patch
new file mode 100644
index 0000000000000..fe47b4e6ba450
--- /dev/null
+++ b/pkgs/development/ocaml-modules/dream/httpun.patch
@@ -0,0 +1,20 @@
+diff --git a/src/http/adapt.ml b/src/http/adapt.ml
+index c6bd416..5b01e17 100644
+--- a/src/http/adapt.ml
++++ b/src/http/adapt.ml
+@@ -74,7 +74,7 @@ let forward_body
+     response
+     (Httpun.Body.Writer.write_string body)
+     (Httpun.Body.Writer.write_bigstring body)
+-    (Httpun.Body.Writer.flush body)
++    (fun f -> Httpun.Body.Writer.flush body (fun _ -> f ()))
+     (fun _code -> Httpun.Body.Writer.close body)
+ 
+ let forward_body_h2
+@@ -85,5 +85,5 @@ let forward_body_h2
+     response
+     (H2.Body.Writer.write_string body)
+     (H2.Body.Writer.write_bigstring body)
+-    (H2.Body.Writer.flush body)
++    (fun f -> H2.Body.Writer.flush body (fun _ -> f ()))
+     (fun _code -> H2.Body.Writer.close body)
diff --git a/pkgs/development/ocaml-modules/dream/pure.nix b/pkgs/development/ocaml-modules/dream/pure.nix
new file mode 100644
index 0000000000000..884715f67cf32
--- /dev/null
+++ b/pkgs/development/ocaml-modules/dream/pure.nix
@@ -0,0 +1,38 @@
+{
+  lib,
+  buildDunePackage,
+  fetchurl,
+  lwt_ppx,
+  base64,
+  hmap,
+  lwt,
+  ptime,
+  uri,
+}:
+
+buildDunePackage rec {
+  pname = "dream-pure";
+  version = "1.0.0-alpha8";
+
+  src = fetchurl {
+    url = "https://github.com/aantron/dream/releases/download/${version}/dream-${version}.tar.gz";
+    hash = "sha256-I+2BKJDAP+XJl0pJYano5iEmvte8fX0UQLhGUslc8pY=";
+  };
+
+  buildInputs = [ lwt_ppx ];
+
+  propagatedBuildInputs = [
+    base64
+    hmap
+    lwt
+    ptime
+    uri
+  ];
+
+  meta = {
+    description = "Shared HTTP types for Dream (server) and Hyper (client)";
+    homepage = "https://aantron.github.io/dream/";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.vbgl ];
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 73a1ce4898198..fcd91264cbb59 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -383,6 +383,12 @@ let
 
     dot-merlin-reader = callPackage ../development/tools/ocaml/merlin/dot-merlin-reader.nix { };
 
+    dream = callPackage ../development/ocaml-modules/dream { };
+
+    dream-httpaf = callPackage ../development/ocaml-modules/dream/httpaf.nix { };
+
+    dream-pure = callPackage ../development/ocaml-modules/dream/pure.nix { };
+
     dscheck = callPackage ../development/ocaml-modules/dscheck { };
 
     dssi = callPackage ../development/ocaml-modules/dssi { };