diff --git a/SimG4Components/src/SimG4SaveSmearedParticles.cpp b/SimG4Components/src/SimG4SaveSmearedParticles.cpp
index 495c329..c4b6272 100644
--- a/SimG4Components/src/SimG4SaveSmearedParticles.cpp
+++ b/SimG4Components/src/SimG4SaveSmearedParticles.cpp
@@ -9,7 +9,7 @@
 
 // datamodel
 #include "edm4hep/ReconstructedParticleCollection.h"
-#include "edm4hep/MCRecoParticleAssociationCollection.h"
+#include "edm4hep/RecoMCParticleLinkCollection.h"
 
 // DD4hep
 #include "DD4hep/Segmentations.h"
@@ -43,8 +43,8 @@ StatusCode SimG4SaveSmearedParticles::saveOutput(const G4Event& aEvent) {
         auto & MCparticle = info->mcParticle();
         auto particle = particles->create();
         auto association = associations->create();
-        association.setRec(particle);
-        association.setSim(MCparticle);
+        association.setFrom(particle);
+        association.setTo(MCparticle);
         particle.setCharge(g4particle->GetCharge());
         particle.setMomentum({
           (float) (info->endMomentum().x() * sim::g42edm::energy),
diff --git a/SimG4Components/src/SimG4SaveSmearedParticles.h b/SimG4Components/src/SimG4SaveSmearedParticles.h
index 4fdd0ee..ba7e652 100644
--- a/SimG4Components/src/SimG4SaveSmearedParticles.h
+++ b/SimG4Components/src/SimG4SaveSmearedParticles.h
@@ -8,7 +8,7 @@
 #include "k4FWCore/DataHandle.h"
 #include "SimG4Interface/ISimG4SaveOutputTool.h"
 
-#include "edm4hep/MCRecoParticleAssociationCollection.h"
+#include "edm4hep/RecoMCParticleLinkCollection.h"
 
 // datamodel
 namespace edm4hep {
@@ -45,7 +45,7 @@ class SimG4SaveSmearedParticles : public AlgTool, virtual public ISimG4SaveOutpu
   /// Handle for the particles to be written
   mutable DataHandle<edm4hep::ReconstructedParticleCollection> m_particles{"RecParticlesSmeared", Gaudi::DataHandle::Writer, this};
   /// Handle for the associations between particles and MC particles to be written
-  mutable DataHandle<edm4hep::MCRecoParticleAssociationCollection> m_particlesMCparticles{"SmearedParticlesToParticles",
+  mutable DataHandle<edm4hep::RecoMCParticleLinkCollection> m_particlesMCparticles{"SmearedParticlesToParticles",
                                                                                   Gaudi::DataHandle::Writer, this};
 };
 
diff --git a/SimG4Fast/src/components/SimG4FastSimHistograms.cpp b/SimG4Fast/src/components/SimG4FastSimHistograms.cpp
index c41a975..945715b 100644
--- a/SimG4Fast/src/components/SimG4FastSimHistograms.cpp
+++ b/SimG4Fast/src/components/SimG4FastSimHistograms.cpp
@@ -6,7 +6,7 @@
 // datamodel
 #include "edm4hep/MCParticleCollection.h"
 #include "edm4hep/ReconstructedParticleCollection.h"
-#include "edm4hep/MCRecoParticleAssociationCollection.h"
+#include "edm4hep/RecoMCParticleLinkCollection.h"
 
 #include "CLHEP/Vector/ThreeVector.h"
 #include "TH1F.h"
@@ -49,12 +49,12 @@ StatusCode SimG4FastSimHistograms::initialize() {
 StatusCode SimG4FastSimHistograms::execute(const EventContext&) const {
   const auto associations = m_particlesMCparticles.get();
   for (const auto& assoc : *associations) {
-    auto mom_edm = assoc.getRec().getMomentum();
+    auto mom_edm = assoc.getFrom().getMomentum();
     CLHEP::Hep3Vector mom(mom_edm.x, mom_edm.y, mom_edm.z);
     m_eta->Fill(mom.eta());
     m_p->Fill(mom.mag());
-    m_pdg->Fill(assoc.getSim().getPDG());
-    auto mom_edm_mc = assoc.getSim().getMomentum();
+    m_pdg->Fill(assoc.getTo().getPDG());
+    auto mom_edm_mc = assoc.getTo().getMomentum();
     CLHEP::Hep3Vector momMC(mom_edm_mc.x, mom_edm_mc.y, mom_edm_mc.z);
     m_diffP->Fill((momMC.mag() - mom.mag()) / momMC.mag());
   }
diff --git a/SimG4Fast/src/components/SimG4FastSimHistograms.h b/SimG4Fast/src/components/SimG4FastSimHistograms.h
index 7f27ec8..b2a6f83 100644
--- a/SimG4Fast/src/components/SimG4FastSimHistograms.h
+++ b/SimG4Fast/src/components/SimG4FastSimHistograms.h
@@ -8,7 +8,7 @@
 #include "k4FWCore/DataHandle.h"
 class ITHistSvc;
 
-#include "edm4hep/MCRecoParticleAssociationCollection.h"
+#include "edm4hep/RecoMCParticleLinkCollection.h"
 
 // datamodel
 namespace edm4hep {
@@ -45,7 +45,7 @@ class SimG4FastSimHistograms : public Gaudi::Algorithm {
 
 private:
   /// Handle for the EDM particles and MC particles associations to be read
-  mutable DataHandle<edm4hep::MCRecoParticleAssociationCollection> m_particlesMCparticles{"ParticlesMCparticles",
+  mutable DataHandle<edm4hep::RecoMCParticleLinkCollection> m_particlesMCparticles{"ParticlesMCparticles",
                                                                                   Gaudi::DataHandle::Reader, this};
   /// Pointer to the interface of histogram service
   SmartIF<ITHistSvc> m_histSvc;