diff --git a/pkgs/development/libraries/grpc/default.nix b/pkgs/development/libraries/grpc/default.nix
index 5cdd9886690..9dd5150f17d 100644
--- a/pkgs/development/libraries/grpc/default.nix
+++ b/pkgs/development/libraries/grpc/default.nix
@@ -1,15 +1,15 @@
 { lib, stdenv, fetchFromGitHub, fetchpatch, cmake, zlib, c-ares, pkg-config, re2, openssl, protobuf
-, gflags, abseil-cpp, libnsl
+, abseil-cpp, libnsl
 }:
 
 stdenv.mkDerivation rec {
-  version = "1.36.4"; # N.B: if you change this, change pythonPackages.grpcio-tools to a matching version too
+  version = "1.37.0"; # N.B: if you change this, change pythonPackages.grpcio-tools to a matching version too
   pname = "grpc";
   src = fetchFromGitHub {
     owner = "grpc";
     repo = "grpc";
     rev = "v${version}";
-    sha256 = "1zxvdg5vgjgkq5wmzwbxj2zydaj90ja074axs26yzd9x08j0bjxz";
+    sha256 = "0q3hcnq351j0qm0gsbaxbsnz1gd9w3bk4cazkvq4l2lfmmiw7z56";
     fetchSubmodules = true;
   };
   patches = [
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake pkg-config ];
   propagatedBuildInputs = [ c-ares re2 zlib abseil-cpp ];
-  buildInputs = [ c-ares.cmake-config openssl protobuf gflags ]
+  buildInputs = [ c-ares.cmake-config openssl protobuf ]
     ++ lib.optionals stdenv.isLinux [ libnsl ];
 
   cmakeFlags =
@@ -31,7 +31,6 @@ stdenv.mkDerivation rec {
       "-DgRPC_RE2_PROVIDER=package"
       "-DgRPC_SSL_PROVIDER=package"
       "-DgRPC_PROTOBUF_PROVIDER=package"
-      "-DgRPC_GFLAGS_PROVIDER=package"
       "-DgRPC_ABSL_PROVIDER=package"
       "-DBUILD_SHARED_LIBS=ON"
       "-DCMAKE_SKIP_BUILD_RPATH=OFF"
diff --git a/pkgs/development/python-modules/grpcio-tools/default.nix b/pkgs/development/python-modules/grpcio-tools/default.nix
index d2d06450b92..2f4ee5de8d2 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 = "1.36.1";
+  version = "1.37.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "80ef584f7b917f575e4b8f2ec59cd4a4d98c2046e801a735f3136b05742a36a6";
+    sha256 = "3ec510c1b6bfc32effc639acf9a055e72dab7a7b6757bf72f2132790d6a7cf1c";
   };
 
   outputs = [ "out" "dev" ];