diff --git a/pkgs/by-name/ro/root/package.nix b/pkgs/by-name/ro/root/package.nix
index 110c780497ad4..eeac613659951 100644
--- a/pkgs/by-name/ro/root/package.nix
+++ b/pkgs/by-name/ro/root/package.nix
@@ -56,7 +56,7 @@
 
 stdenv.mkDerivation rec {
   pname = "root";
-  version = "6.34.00";
+  version = "6.34.02";
 
   passthru = {
     tests = import ./tests { inherit callPackage; };
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "https://root.cern.ch/download/root_v${version}.source.tar.gz";
-    hash = "sha256-87APPblTgpyEkCnDnXZgqVZGivJH79lG6JByEBeWqwM=";
+    hash = "sha256-FmvsVi5CDhd6rzEz+j+wn4Ls3avoouGQY0W61EJRP5Q=";
   };
 
   clad_src = fetchgit {
@@ -81,6 +81,9 @@ stdenv.mkDerivation rec {
     pkg-config
     git
   ];
+  propagatedBuildInputs = [
+    nlohmann_json # link interface of target "ROOT::ROOTEve"
+  ];
   buildInputs =
     [
       davix
@@ -98,7 +101,6 @@ stdenv.mkDerivation rec {
       libxml2
       llvm_18
       lz4
-      nlohmann_json
       openblas
       openssl
       patchRcPathCsh