diff --git a/main_configs/rpc-us-40.yaml b/main_configs/rpc-us-40.yaml
new file mode 100644
index 00000000..666dc89c
--- /dev/null
+++ b/main_configs/rpc-us-40.yaml
@@ -0,0 +1,26 @@
+upstreams:
+  - id: us-40-linea-mainnet-geth
+    labels:
+      provider: local
+    connection:
+      generic:
+        rpc:
+          url: http://linea-mainnet-geth:8545
+        ws:
+          frameSize: 20Mb
+          msgSize: 50Mb
+          url: ws://linea-mainnet-geth:8545
+    chain: linea
+    method-groups:
+      enabled:
+        - debug
+        - filter
+    methods:
+      disabled:
+        - name: debug_traceBlockByHash
+        # pruned geth lacks the state to serve eth_getProof; the drpc gateway
+        # probes it and marks the whole upstream unavailable on "header not
+        # found" (especially while catching up after a restart).
+        - name: eth_getProof
+      enabled:
+        - name: txpool_content