diff --git a/pkgs/development/libraries/grpc/default.nix b/pkgs/development/libraries/grpc/default.nix
index 5d6a10ff113..273b5b1e711 100644
--- a/pkgs/development/libraries/grpc/default.nix
+++ b/pkgs/development/libraries/grpc/default.nix
@@ -1,13 +1,13 @@
 { stdenv, fetchFromGitHub, cmake, zlib, c-ares, pkgconfig, openssl, protobuf, gflags }:
 
 stdenv.mkDerivation rec {
-  version = "1.24.3"; # N.B: if you change this, change pythonPackages.grpcio and pythonPackages.grpcio-tools to a matching version too
+  version = "1.25.0"; # 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 = "19g3fihds9rih2ciypkwi4jahjaymyqnjhd9id397fgj1qkw4w69";
+    sha256 = "02nbmbk1xpibjzvbhi8xpazmwry46ki24vks1sh2p0aqwy4hv6yb";
     fetchSubmodules = true;
   };
   nativeBuildInputs = [ cmake pkgconfig ];
diff --git a/pkgs/development/python-modules/grpcio-tools/default.nix b/pkgs/development/python-modules/grpcio-tools/default.nix
index 919283fb04f..e4fb0914f0a 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 = "1.24.3";
+  version = "1.25.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "5efc92721a364e049ad3a174d5b20a21009fae9db04b3e5020ed0b534d9c022f";
+    sha256 = "988014c714ca654b3b7ca9f4dabfe487b00e023bfdd9eaf1bb0fed82bf8c4255";
   };
 
   enableParallelBuilding = true;