diff --git a/pkgs/development/python-modules/pulumi/default.nix b/pkgs/development/python-modules/pulumi/default.nix
index b0d11e59d964..68e5391b9691 100644
--- a/pkgs/development/python-modules/pulumi/default.nix
+++ b/pkgs/development/python-modules/pulumi/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
     cp ../../README.md .
     substituteInPlace setup.py \
       --replace "3.0.0" "${version}" \
-      --replace "grpcio==1.50" "grpcio"
+      --replace "grpcio==1.51.3" "grpcio"
   '';
 
   # Allow local networking in tests on Darwin
diff --git a/pkgs/tools/admin/pulumi/default.nix b/pkgs/tools/admin/pulumi/default.nix
index 68a0936c7eba..0f1cbb65f91e 100644
--- a/pkgs/tools/admin/pulumi/default.nix
+++ b/pkgs/tools/admin/pulumi/default.nix
@@ -14,21 +14,21 @@
 
 buildGoModule rec {
   pname = "pulumi";
-  version = "3.55.0";
+  version = "3.56.0";
 
   # Used in pulumi-language packages, which inherit this prop
-  sdkVendorHash = "sha256-ZE+df01jRx3nDiPGdlh1JNJn5NqsHW22fiUzeNlkzF8=";
+  sdkVendorHash = "sha256-oXsU4h4CwukJHttYLT7JiW2He8Yq5qAwnxL8+G5FIpc=";
 
   src = fetchFromGitHub {
     owner = pname;
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-x5XebYFpxFi2QgrrK+wdMFOLiJLnRmar4gsply8F718=";
+    hash = "sha256-cXNYg5zNfZTTuv+EaSGuaA9mbMPq7vKTKcsxfnM3NbQ=";
     # Some tests rely on checkout directory name
     name = "pulumi";
   };
 
-  vendorSha256 = "sha256-8vchyD3MTi9Fxrd6SiywFK4tadyauvDxjs9RmoJuULA=";
+  vendorHash = "sha256-TWpH3y+7kLknPy+CExhnjfEvaIWWs1d5JCVF3FA1Z7I=";
 
   sourceRoot = "${src.name}/pkg";