diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..0c9cc46
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,29 @@
+{ mkDerivation, async, base, bytestring, c2hs, clock, containers
+, grpc, managed, pipes, proto3-wire, protobuf-wire, random, safe
+, stdenv, stm, tasty, tasty-hunit, text, time, transformers, turtle
+, unix, vector
+}:
+mkDerivation {
+  pname = "grpc-haskell";
+  version = "0.0.0.0";
+  src = ./.;
+  isLibrary = true;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    async base bytestring clock containers managed pipes proto3-wire
+    protobuf-wire safe stm tasty tasty-hunit transformers vector
+  ];
+  librarySystemDepends = [ grpc ];
+  libraryToolDepends = [ c2hs ];
+  executableHaskellDepends = [
+    async base bytestring containers proto3-wire protobuf-wire random
+    text transformers
+  ];
+  testHaskellDepends = [
+    async base bytestring clock containers managed pipes protobuf-wire
+    safe tasty tasty-hunit text time transformers turtle unix
+  ];
+  homepage = "http://github.com/aloiscochard/grpc-haskell";
+  description = "Haskell implementation of gRPC layered on shared C library";
+  license = stdenv.lib.licenses.asl20;
+}
diff --git a/grpc-haskell.cabal b/grpc-haskell.cabal
index 75cd945..d520601 100644
--- a/grpc-haskell.cabal
+++ b/grpc-haskell.cabal
@@ -26,11 +26,11 @@ flag with-examples
 library
   build-depends:
       base ==4.8.*
-    , clock >=0.6.0 && <=0.7.2
+    , clock >=0.6.0 && <0.8.0
     , bytestring ==0.10.*
     , stm == 2.4.*
     , containers ==0.5.*
-    , managed >= 1.0.5 && < 1.1
+    , managed >= 1.0.0 && < 1.1
     , pipes ==4.1.*
     , transformers
     , proto3-wire
@@ -176,12 +176,12 @@ test-suite test
     , tasty >= 0.11 && <0.12
     , tasty-hunit >= 0.9 && <0.10
     , containers ==0.5.*
-    , managed >= 1.0.5 && < 1.1
+    , managed >= 1.0.0 && < 1.1
     , pipes ==4.1.*
     , protobuf-wire
     , transformers
     , safe
-    , clock ==0.6.*
+    , clock >=0.6.0 && <0.8.0
     , turtle >= 1.2.0
     , text
   other-modules: