diff --git a/pkgs/by-name/bl/blender/package.nix b/pkgs/by-name/bl/blender/package.nix
index 95f7ca7ddfc8..62531b7ac2b9 100644
--- a/pkgs/by-name/bl/blender/package.nix
+++ b/pkgs/by-name/bl/blender/package.nix
@@ -53,6 +53,7 @@
   llvmPackages,
   makeWrapper,
   mesa,
+  nix-update-script,
   openUsdSupport ? !stdenv.hostPlatform.isDarwin,
   openal,
   opencollada-blender,
@@ -104,20 +105,21 @@ let
   });
 
   optix = fetchzip {
-    # URL from https://gitlab.archlinux.org/archlinux/packaging/packages/blender/-/commit/333add667b43255dcb011215a2d2af48281e83cf#9b9baac1eb9b72790eef5540a1685306fc43fd6c_30_30
-    url = "https://developer.download.nvidia.com/redist/optix/v7.3/OptiX-7.3.0-Include.zip";
-    hash = "sha256-aMrp0Uff4c3ICRn4S6zedf6Q4Mc0/duBhKwKgYgMXVU=";
+    # Look at upstream Blender BuildBot logs to determine the current version,
+    # see Git blame here for historical details
+    url = "https://developer.download.nvidia.com/redist/optix/v7.4/OptiX-7.4.0-Include.zip";
+    hash = "sha256-ca08XetwaUYC9foeP5bff9kcDfuFgEzopvjspn2s8RY=";
   };
 in
 
 stdenv'.mkDerivation (finalAttrs: {
   pname = "blender";
-  version = "4.4.1";
+  version = "4.4.3";
 
-  srcs = fetchzip {
+  src = fetchzip {
     name = "source";
     url = "https://download.blender.org/source/blender-${finalAttrs.version}.tar.xz";
-    hash = "sha256-5MsJ7UFpwwtaq905CiTkas/qPYOaeiacSSl3qu9h5w0=";
+    hash = "sha256-vHDOKI7uqB5EbdRu711axBuYX1zM746E6GvK2Nl5hZg=";
   };
 
   patches = [ ] ++ lib.optional stdenv.hostPlatform.isDarwin ./darwin.patch;
@@ -414,6 +416,12 @@ stdenv'.mkDerivation (finalAttrs: {
         }], check=True)  # noqa: E501
       '';
     };
+
+    updateScript = nix-update-script {
+      extraArgs = [
+        "--url=https://projects.blender.org/blender/blender"
+      ];
+    };
   };
 
   meta = {