diff --git a/src/aare/daq/spreadsheetupdater.py b/src/aare/daq/spreadsheetupdater.py
index 27bd715e..2961e0e9 100644
--- a/src/aare/daq/spreadsheetupdater.py
+++ b/src/aare/daq/spreadsheetupdater.py
@@ -80,14 +80,14 @@ def on_message(ws, message):
         # Write normal pucks to sample_spreadsheet
         normal_key = f"{config._BeamlineConfig__bl}:sample_spreadsheet"
         normal_list = SampleShortInfoList(s=normal_short_infos)
-        config._BeamlineConfig__client.set(normal_key, normal_list.json())
+        config._BeamlineConfig__client.set(normal_key, normal_list.model_dump_json())
         print("[REDIS][INFO] Written normal spreadsheet to:", normal_key)
 
         # Write reference tools to reference-tools
         ref_key = f"{config._BeamlineConfig__bl}:reference-tools"
         if reference_short_infos:
             ref_list = SampleShortInfoList(s=reference_short_infos)
-            config._BeamlineConfig__client.set(ref_key, ref_list.json())
+            config._BeamlineConfig__client.set(ref_key, ref_list.model_dump_json())
             print("[REDIS][INFO] Written reference tools to:", ref_key)
         else:
             # Clear key if empty