diff --git a/compose.yml b/compose.yml
index 76768de..e3f9a88 100644
--- a/compose.yml
+++ b/compose.yml
@@ -824,7 +824,7 @@ services:
     restart: unless-stopped
 
   tempo:
-    image: grafana/tempo:2.7.2
+    image: grafana/tempo:3.1.1
     container_name: tempo
     networks:
       - observability
diff --git a/infra/tempo/tempo.yml b/infra/tempo/tempo.yml
index 6782fd1..52fec5c 100644
--- a/infra/tempo/tempo.yml
+++ b/infra/tempo/tempo.yml
@@ -10,10 +10,8 @@ distributor:
         http:
           endpoint: 0.0.0.0:4318
 
-ingester:
-  trace_idle_period: 30s
-  max_block_bytes: 1048576
-  max_block_duration: 5m
+# No `ingester:` block: Tempo 3 removed the ingester (its live-store and
+# block-builder replace it, on defaults), and rejects the key outright.
 
 storage:
   trace: