diff --git a/pkgs/development/tools/ocaml/js_of_ocaml/compiler.nix b/pkgs/development/tools/ocaml/js_of_ocaml/compiler.nix
index 6d269552f62..79801304595 100644
--- a/pkgs/development/tools/ocaml/js_of_ocaml/compiler.nix
+++ b/pkgs/development/tools/ocaml/js_of_ocaml/compiler.nix
@@ -8,13 +8,13 @@ else
 
 stdenv.mkDerivation rec {
 	name = "js_of_ocaml-compiler-${version}";
-	version = "3.1.0";
+	version = "3.2.0";
 
 	src = fetchFromGitHub {
 		owner = "ocsigen";
 		repo = "js_of_ocaml";
 		rev = version;
-		sha256 = "17a0kb39bcx2qq41cq7kjrxghm67l1yahrs47yakgb1avna0pqd9";
+		sha256 = "0dxxdxgrbg9xvvi3i627krnk6rb1ja0ypp2diwdkpnmy45wak9lv";
 	};
 
 	buildInputs = [ ocaml findlib jbuilder cmdliner cppo ];
diff --git a/pkgs/development/tools/ocaml/js_of_ocaml/lwt.nix b/pkgs/development/tools/ocaml/js_of_ocaml/lwt.nix
index 31a5c3ea17b..5ec8cca344d 100644
--- a/pkgs/development/tools/ocaml/js_of_ocaml/lwt.nix
+++ b/pkgs/development/tools/ocaml/js_of_ocaml/lwt.nix
@@ -1,6 +1,6 @@
 { stdenv, ocaml, findlib, jbuilder, js_of_ocaml-compiler, js_of_ocaml-ppx
 , ocaml-migrate-parsetree, ppx_tools_versioned
-, js_of_ocaml, ocaml_lwt
+, js_of_ocaml, ocaml_lwt, lwt_log
 }:
 
 stdenv.mkDerivation rec {
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
 
 	buildInputs = [ ocaml findlib jbuilder js_of_ocaml-ppx ocaml-migrate-parsetree ppx_tools_versioned ];
 
-	propagatedBuildInputs = [ js_of_ocaml ocaml_lwt ];
+	propagatedBuildInputs = [ js_of_ocaml ocaml_lwt lwt_log ];
 
 	buildPhase = "jbuilder build -p js_of_ocaml-lwt";
 }