diff --git a/pkgs/development/libraries/grpc/default.nix b/pkgs/development/libraries/grpc/default.nix
index fd39e0d2368b..56f3cf0e7abd 100644
--- a/pkgs/development/libraries/grpc/default.nix
+++ b/pkgs/development/libraries/grpc/default.nix
@@ -21,7 +21,7 @@
 
 stdenv.mkDerivation rec {
   pname = "grpc";
-  version = "1.51.0"; # N.B: if you change this, please update:
+  version = "1.51.1"; # N.B: if you change this, please update:
     # pythonPackages.grpcio-tools
     # pythonPackages.grpcio-status
 
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
     owner = "grpc";
     repo = "grpc";
     rev = "v${version}";
-    hash = "sha256-IOwwHwPogOtCnOAGi8JgW81JB47MlmL2vNG9g2Jg8Zo=";
+    hash = "sha256-o1C35mtA2lTGgugCKAQyRDNlCnutoJ1ol/DInJNobnc=";
     fetchSubmodules = true;
   };
 
diff --git a/pkgs/development/python-modules/grpcio-status/default.nix b/pkgs/development/python-modules/grpcio-status/default.nix
index 96d2b8aeb233..022d677cf516 100644
--- a/pkgs/development/python-modules/grpcio-status/default.nix
+++ b/pkgs/development/python-modules/grpcio-status/default.nix
@@ -9,14 +9,14 @@
 
 buildPythonPackage rec {
   pname = "grpcio-status";
-  version = "1.51.0";
+  version = "1.51.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "5415b3fa555cd9f0dbfe51bc2b2818cf11c96b5898b103421f6df2fa65108fa2";
+    sha256 = "ac2617a3095935ebd785e2228958f24b10a0d527a0c9eb5a0863c784f648a816";
   };
 
   postPatch = ''
diff --git a/pkgs/development/python-modules/grpcio-tools/default.nix b/pkgs/development/python-modules/grpcio-tools/default.nix
index 2e1a130c07b4..82e9315aec9a 100644
--- a/pkgs/development/python-modules/grpcio-tools/default.nix
+++ b/pkgs/development/python-modules/grpcio-tools/default.nix
@@ -2,12 +2,12 @@
 
 buildPythonPackage rec {
   pname = "grpcio-tools";
-  version = "1.51.0";
+  version = "1.51.1";
   format = "setuptools";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "264abafefc3240aacdc6e0c7765a8a20c284f1267ae0dd899084f07694b55095";
+    sha256 = "8e62d23d3fed9d4f81738f98dd193dbd2e21aed4a8f0dd715e75b5439e649727";
   };
 
   postPatch = ''