diff --git a/bin/ci/update_traces_checksum.py b/bin/ci/update_traces_checksum.py
index 5da65628ecb..c0da34fbb52 100755
--- a/bin/ci/update_traces_checksum.py
+++ b/bin/ci/update_traces_checksum.py
@@ -70,7 +70,7 @@ def gather_results(
 
                 # parse artifact
                 results_json_bz2 = cur_job.artifact(path="results/results.json.bz2", streamed=False)
-                results_json = bz2.decompress(results_json_bz2).decode("utf-8")
+                results_json = bz2.decompress(results_json_bz2).decode("utf-8", errors="replace")
                 results = json.loads(results_json)
 
                 for _, value in results["tests"].items():