diff --git a/pkgs/development/libraries/grpc/default.nix b/pkgs/development/libraries/grpc/default.nix
index 55f1fb2790e6..4cba9c1b511b 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 = "1.48.0"; # N.B: if you change this, please update:
+  version = "1.48.1"; # 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-cR+K3po/9XpYWe+sRXGwzvNAPChrWzYu5D4ygBTKKIQ=";
+    hash = "sha256-It9oFenKoPDCOVxiKCGJc8i18zdDZCceR22HR5Tu1sw=";
     fetchSubmodules = true;
   };
 
diff --git a/pkgs/development/python-modules/grpcio-status/default.nix b/pkgs/development/python-modules/grpcio-status/default.nix
index 37f3617ecf39..77ac855e1f6f 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 = "1.48.0";
+  version = "1.48.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "afac961fc3713889d3c48c11461aba49842ca62a54dfe8f346442046036e9856";
+    sha256 = "655af4d0d6e67586cb2ca24c3db5fe08e4e2972d17f295f6b546fa7bd7eef1f6";
   };
 
   propagatedBuildInputs = [
diff --git a/pkgs/development/python-modules/grpcio-tools/default.nix b/pkgs/development/python-modules/grpcio-tools/default.nix
index 4797772086ad..9fdcdce48927 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 = "1.48.0";
+  version = "1.48.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "dd7f757608e7dfae4ab2e7fc1e8951e6eb9526ebdc7ce90597329bc4c408c9a1";
+    sha256 = "1178f2ea531f80cc2027ec64728df6ffc8e98cf1df61652a496eafd612127183";
   };
 
   outputs = [ "out" "dev" ];