diff --git a/src/examples/PodioExample/PodioExample.cc b/src/examples/PodioExample/PodioExample.cc
index dc22c1cc1..2bf703814 100644
--- a/src/examples/PodioExample/PodioExample.cc
+++ b/src/examples/PodioExample/PodioExample.cc
@@ -21,15 +21,15 @@
 
 void create_hits_file() {
 
-    EventInfo eventinfo1(7, 0, 22);
+    MutableEventInfo eventinfo1(7, 0, 22);
     EventInfoCollection eventinfos1;
     eventinfos1.push_back(eventinfo1);
 
     ExampleHitCollection hits1;
-    hits1.push_back(ExampleHit(22, -1, -1, 0, 100, 0));
-    hits1.push_back(ExampleHit(49, 1, 1, 0, 15.5, 0));
-    hits1.push_back(ExampleHit(47, 1, 2, 0, 0.5, 0));
-    hits1.push_back(ExampleHit(42, 2, 1, 0, 4.0, 0));
+    hits1.push_back(MutableExampleHit(22, -1, -1, 0, 100, 0));
+    hits1.push_back(MutableExampleHit(49, 1, 1, 0, 15.5, 0));
+    hits1.push_back(MutableExampleHit(47, 1, 2, 0, 0.5, 0));
+    hits1.push_back(MutableExampleHit(42, 2, 1, 0, 4.0, 0));
 
     podio::Frame event1;
     event1.put(std::move(hits1), "hits");
@@ -38,15 +38,15 @@ void create_hits_file() {
     podio::ROOTFrameWriter writer("hits.root");
     writer.writeFrame(event1, "events");
 
-    EventInfo eventinfo2(8, 0, 22);
+    MutableEventInfo eventinfo2(8, 0, 22);
     EventInfoCollection eventinfos2;
     eventinfos2.push_back(eventinfo2);
 
     ExampleHitCollection hits2;
-    hits2.push_back(ExampleHit(42, 5, -5, 5, 7.6, 0));
-    hits2.push_back(ExampleHit(618, -3, -5, 1, 99.9, 0));
-    hits2.push_back(ExampleHit(27, -10, 10, 10, 22.2, 0));
-    hits2.push_back(ExampleHit(28, -9, 11, 10, 7.8, 0));
+    hits2.push_back(MutableExampleHit(42, 5, -5, 5, 7.6, 0));
+    hits2.push_back(MutableExampleHit(618, -3, -5, 1, 99.9, 0));
+    hits2.push_back(MutableExampleHit(27, -10, 10, 10, 22.2, 0));
+    hits2.push_back(MutableExampleHit(28, -9, 11, 10, 7.8, 0));
 
     podio::Frame event2;
     event2.put(std::move(hits2), "hits");
diff --git a/src/examples/TimesliceExample/MyFileReader.h b/src/examples/TimesliceExample/MyFileReader.h
index fb5985c22..7c372d442 100644
--- a/src/examples/TimesliceExample/MyFileReader.h
+++ b/src/examples/TimesliceExample/MyFileReader.h
@@ -28,9 +28,9 @@ struct MyFileReader : public JEventSource {
         auto hits_out  = std::make_unique<ExampleHitCollection>();
 
         // ExampleHit(unsigned long long cellID, double x, double y, double z, double energy, std::uint64_t time);
-        hits_out->push_back(ExampleHit(event_nr, 0, 22, 22, 22, 0));
-        hits_out->push_back(ExampleHit(event_nr, 0, 49, 49, 49, 1));
-        hits_out->push_back(ExampleHit(event_nr, 0, 7.6, 7.6, 7.6, 2));
+        hits_out->push_back(MutableExampleHit(event_nr, 0, 22, 22, 22, 0));
+        hits_out->push_back(MutableExampleHit(event_nr, 0, 49, 49, 49, 1));
+        hits_out->push_back(MutableExampleHit(event_nr, 0, 7.6, 7.6, 7.6, 2));
 
         LOG_DEBUG(GetLogger()) << "MySource: Emitted " << GetLevel() << " " << event.GetEventNumber() << "\n"
             << TabulateHits(hits_out.get())
@@ -41,12 +41,12 @@ struct MyFileReader : public JEventSource {
         // Furnish this event with info object
         if (GetLevel() == JEventLevel::Timeslice) {
             TimesliceInfoCollection info;
-            info.push_back(TimesliceInfo(event_nr, 0)); // event nr, run nr
+            info.push_back(MutableTimesliceInfo(event_nr, 0)); // event nr, run nr
             event.InsertCollection<TimesliceInfo>(std::move(info), "ts_info");
         }
         else {
             EventInfoCollection info;
-            info.push_back(EventInfo(event_nr, 0, 0)); // event nr, timeslice nr, run nr
+            info.push_back(MutableEventInfo(event_nr, 0, 0)); // event nr, timeslice nr, run nr
             event.InsertCollection<EventInfo>(std::move(info), "evt_info");
         }
         return Result::Success;