diff --git a/Detectors/Upgrades/ITS3/alignment/CMakeLists.txt b/Detectors/Upgrades/ITS3/alignment/CMakeLists.txt
index e04dfcbb43963..cc350b43af8b7 100644
--- a/Detectors/Upgrades/ITS3/alignment/CMakeLists.txt
+++ b/Detectors/Upgrades/ITS3/alignment/CMakeLists.txt
@@ -31,7 +31,8 @@ o2_add_library(ITS3Align
                                      O2::DataFormatsGlobalTracking
                                      O2::DetectorsVertexing
                                      nlohmann_json::nlohmann_json
-                                     GBL::GBL)
+                                     GBL::GBL
+                                     Mille::Mille2)
 if (OpenMP_CXX_FOUND)
     target_compile_definitions(${targetName} PRIVATE WITH_OPENMP)
     target_link_libraries(${targetName} PRIVATE OpenMP::OpenMP_CXX)
diff --git a/Detectors/Upgrades/ITS3/alignment/src/AlignmentSpec.cxx b/Detectors/Upgrades/ITS3/alignment/src/AlignmentSpec.cxx
index 142dd55579dde..42d4e0ee551b0 100644
--- a/Detectors/Upgrades/ITS3/alignment/src/AlignmentSpec.cxx
+++ b/Detectors/Upgrades/ITS3/alignment/src/AlignmentSpec.cxx
@@ -23,7 +23,7 @@
 #include <GblData.h>
 #include <GblPoint.h>
 #include <GblMeasurement.h>
-#include <MilleBinary.h>
+#include <Mille/MilleFactory.h>
 #include <nlohmann/json.hpp>
 
 #include "Framework/ConfigParamRegistry.h"
@@ -466,7 +466,7 @@ void AlignmentSpec::process()
   LOGP(info, "\t\tGBL LostWeight = {}", lostWeightSum);
   LOGP(info, "Streaming results to output");
   if (mOutOpt[OutputOpt::MilleData]) {
-    gbl::MilleBinary mille(mParams->milleBinFile, true);
+    auto mille = Mille::spawnMilleRecord(mParams->milleBinFile, true);
     for (auto& slot : gblTrajSlots) {
       for (auto& traj : slot) {
         traj.milleOut(mille);
diff --git a/dependencies/O2Dependencies.cmake b/dependencies/O2Dependencies.cmake
index b46dabb5690ff..00ef0326af6e5 100644
--- a/dependencies/O2Dependencies.cmake
+++ b/dependencies/O2Dependencies.cmake
@@ -285,6 +285,10 @@ if(NOT TARGET Eigen3::Eigen)
     )
 endif()
 
+find_package(Mille CONFIG REQUIRED)
+if(NOT TARGET Mille::Mille2)
+    add_library(Mille::Mille2 ALIAS Mille2)
+endif()
 find_package(GBL)
 set_package_properties(GBL PROPERTIES TYPE REQUIRED)
 if(GBL_FOUND AND NOT TARGET GBL::GBL)