diff --git a/Dockerfile b/Dockerfile
index 8281d5f..e532ecb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -67,6 +67,6 @@ COPY --from=builder /optimum-gateway/LICENSE /optimum-gateway/NOTICE /optimum-ga
 
 # USER gateway
 
-EXPOSE 33212 33213 48123
+EXPOSE 33212/tcp 33213/udp 48123/tcp
 
 ENTRYPOINT ["/optimum-gateway"]
diff --git a/docker-compose-local.yml b/docker-compose-local.yml
index 1b630fc..19eb611 100644
--- a/docker-compose-local.yml
+++ b/docker-compose-local.yml
@@ -9,9 +9,9 @@ services:
     networks:
       - gateway_cluster
     ports:
-      - "33212:33212"
-      - "33213:33213"
-      - "48123:48123"
+      - "33212:33212/tcp"
+      - "33213:33213/udp"
+      - "48123:48123/tcp"
     volumes:
       - "./config:/app/config:ro"
       - "./mump2p/data/mump2p/:/tmp/mump2p"
diff --git a/docker-compose-sidecar.yml b/docker-compose-sidecar.yml
index a38c16a..d80ab9d 100644
--- a/docker-compose-sidecar.yml
+++ b/docker-compose-sidecar.yml
@@ -52,9 +52,9 @@ services:
     networks:
       - mump2p_cluster
     ports:
-      - "33212:33212" # libp2p port
-      - "33213:33213" # opt port
-      - "48123:48123" # telemetry + API
+      - "33212:33212/tcp" # libp2p
+      - "33213:33213/udp" # mump2p QUIC
+      - "48123:48123/tcp" # telemetry + API
     volumes:
       - "./config:/app/config:ro"
       - "./mump2p/data/mump2p/:/tmp/mump2p" # identity_mump2p_dir in app_conf.yml must match container path
diff --git a/integration/ethereum/docker-compose.yml b/integration/ethereum/docker-compose.yml
index a8f81b2..45a0c6d 100644
--- a/integration/ethereum/docker-compose.yml
+++ b/integration/ethereum/docker-compose.yml
@@ -9,9 +9,9 @@ services:
     restart: unless-stopped
     profiles: ["lite", "full", "geth", "nethermind", "teku", "prysm", "lighthouse", "nimbus", "lodestar"]
     ports:
-      - "33212:33212"         # libp2p port (CL clients connect here)
-      - "43213:43213"         # mump2p agent port
-      - "48123:48123"         # Telemetry/metrics port
+      - "33212:33212/tcp"     # libp2p (CL clients connect here)
+      - "43213:43213/udp"     # mump2p QUIC
+      - "48123:48123/tcp"     # telemetry/metrics
     volumes:
       - ./config:/app/config  # Config directory (must contain app_conf.yml)
       - ./identity/libp2p:/tmp/libp2p   # Persistent libp2p identity