diff --git a/pkgs/development/libraries/grpc/default.nix b/pkgs/development/libraries/grpc/default.nix
index d45aba1cb378..5d6a10ff1132 100644
--- a/pkgs/development/libraries/grpc/default.nix
+++ b/pkgs/development/libraries/grpc/default.nix
@@ -1,13 +1,14 @@
 { stdenv, fetchFromGitHub, cmake, zlib, c-ares, pkgconfig, openssl, protobuf, gflags }:
 
 stdenv.mkDerivation rec {
-  version = "1.23.0"; # N.B: if you change this, change pythonPackages.grpcio and pythonPackages.grpcio-tools to a matching version too
+  version = "1.24.3"; # N.B: if you change this, change pythonPackages.grpcio and pythonPackages.grpcio-tools to a matching version too
   pname = "grpc";
   src = fetchFromGitHub {
     owner = "grpc";
     repo = "grpc";
     rev = "v${version}";
-    sha256 = "14svfy7lvz8lf6b7zg1fbypj2n46n9gq0ldgnv85jm0ikv72cgv6";
+    sha256 = "19g3fihds9rih2ciypkwi4jahjaymyqnjhd9id397fgj1qkw4w69";
+    fetchSubmodules = true;
   };
   nativeBuildInputs = [ cmake pkgconfig ];
   buildInputs = [ zlib c-ares c-ares.cmake-config openssl protobuf gflags ];
diff --git a/pkgs/development/python-modules/grpcio-tools/default.nix b/pkgs/development/python-modules/grpcio-tools/default.nix
index cb6e47a60026..919283fb04f9 100644
--- a/pkgs/development/python-modules/grpcio-tools/default.nix
+++ b/pkgs/development/python-modules/grpcio-tools/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "grpcio-tools";
-  version = "1.23.0";
+  version = "1.24.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "cbc35031ec2b29af36947d085a7fbbcd8b79b84d563adf6156103d82565f78db";
+    sha256 = "5efc92721a364e049ad3a174d5b20a21009fae9db04b3e5020ed0b534d9c022f";
   };
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/python-modules/grpcio/default.nix b/pkgs/development/python-modules/grpcio/default.nix
index 65e9e3fb5995..60bfae8dca5b 100644
--- a/pkgs/development/python-modules/grpcio/default.nix
+++ b/pkgs/development/python-modules/grpcio/default.nix
@@ -1,18 +1,10 @@
-{ stdenv, buildPythonPackage, fetchFromGitHub, darwin
+{ stdenv, buildPythonPackage, darwin, grpc
 , six, protobuf, enum34, futures, isPy27, pkgconfig
 , cython}:
 
 buildPythonPackage rec {
+  inherit (grpc) src version;
   pname = "grpcio";
-  version = "1.23.0";
-
-  src = fetchFromGitHub {
-    owner = "grpc";
-    repo = "grpc";
-    rev = "v${version}";
-    fetchSubmodules = true;
-    sha256 = "18hf794frncqvq3n4j5n8kip0gp6ch4pf5b3n6809q0c1paf6rp5";
-  };
 
   nativeBuildInputs = [ cython pkgconfig ]
                     ++ stdenv.lib.optional stdenv.isDarwin darwin.cctools;