diff --git a/.env.sample.holesky b/.env.sample.holesky
index 0e0e49ee..5ba80b45 100644
--- a/.env.sample.holesky
+++ b/.env.sample.holesky
@@ -78,6 +78,9 @@ CHARON_P2P_RELAYS=https://0.relay.obol.tech,https://1.relay.obol.tech/,https://c
 # Increase the duration charon will wait while publishing data to the beacon node
 #CHARON_BEACON_NODE_SUBMIT_TIMEOUT=
 
+# The address of the execution engine JSON-RPC API. 
+#CHARON_EXECUTION_CLIENT_RPC_ENDPOINT=
+
 # Override the charon logging level; debug, info, warning, error.
 #CHARON_LOG_LEVEL=
 
diff --git a/.env.sample.hoodi b/.env.sample.hoodi
index 2a3e35ea..7d7403c1 100644
--- a/.env.sample.hoodi
+++ b/.env.sample.hoodi
@@ -78,6 +78,9 @@ CHARON_P2P_RELAYS=https://0.relay.obol.tech,https://1.relay.obol.tech/,https://c
 # Increase the duration charon will wait while publishing data to the beacon node
 #CHARON_BEACON_NODE_SUBMIT_TIMEOUT=
 
+# The address of the execution engine JSON-RPC API. 
+#CHARON_EXECUTION_CLIENT_RPC_ENDPOINT=
+
 # Override the charon logging level; debug, info, warning, error.
 #CHARON_LOG_LEVEL=
 
diff --git a/.env.sample.mainnet b/.env.sample.mainnet
index 137b622d..4641326b 100644
--- a/.env.sample.mainnet
+++ b/.env.sample.mainnet
@@ -72,6 +72,9 @@ CHARON_P2P_RELAYS=https://0.relay.obol.tech,https://1.relay.obol.tech/,https://c
 # Increase the duration charon will wait while publishing data to the beacon node
 #CHARON_BEACON_NODE_SUBMIT_TIMEOUT=
 
+# The address of the execution engine JSON-RPC API. 
+#CHARON_EXECUTION_CLIENT_RPC_ENDPOINT=
+
 # Override the charon logging level; debug, info, warning, error.
 #CHARON_LOG_LEVEL=
 
diff --git a/docker-compose.yml b/docker-compose.yml
index c989b349..20b7803d 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -101,6 +101,7 @@ services:
       - CHARON_LOKI_ADDRESSES=${CHARON_LOKI_ADDRESSES:-http://loki:3100/loki/api/v1/push}
       - CHARON_LOKI_SERVICE=charon
       - CHARON_NICKNAME=${CHARON_NICKNAME:-}
+      - CHARON_EXECUTION_CLIENT_RPC_ENDPOINT=${CHARON_EXECUTION_CLIENT_RPC_ENDPOINT:-http://nethermind:8545}
     ports:
       - ${CHARON_PORT_P2P_TCP:-3610}:${CHARON_PORT_P2P_TCP:-3610}/tcp # P2P TCP libp2p
     networks: [dvnode]