diff --git a/manifests/cassandra-dc.yaml b/manifests/cassandra-dc.yaml
index 4128ad6..84a410c 100644
--- a/manifests/cassandra-dc.yaml
+++ b/manifests/cassandra-dc.yaml
@@ -19,10 +19,10 @@ spec:
     requests:
       memory: "1Gi"
     limits:
-      memory: "3Gi"
+      memory: "2Gi"
   config:
     jvm-server-options:
-      initial_heap_size: "768M"
-      max_heap_size: "1536M"
+      initial_heap_size: "512M"
+      max_heap_size: "1024M"
   managementApiAuth:
     insecure: {} # dev only; for prod use a secret