diff --git a/tests/compose/fetchmail/docker-compose.yml b/tests/compose/fetchmail/docker-compose.yml
index d31479d4..ed296d3e 100644
--- a/tests/compose/fetchmail/docker-compose.yml
+++ b/tests/compose/fetchmail/docker-compose.yml
@@ -42,6 +42,9 @@ services:
       - "/mailu/dkim:/dkim"
     depends_on:
       - redis
+      - resolver
+    dns:
+      - 192.168.203.254
 
   imap:
     image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${PINNED_MAILU_VERSION:-local}
@@ -81,6 +84,15 @@ services:
     restart: always
     env_file: mailu.env
 
+  resolver:
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}unbound:${MAILU_VERSION:-local}
+    env_file: mailu.env
+    restart: always
+    networks:
+      default:
+        ipv4_address: 192.168.203.254
+
+
   # Webmail
 
 
diff --git a/tests/compose/filters/docker-compose.yml b/tests/compose/filters/docker-compose.yml
index 381d3683..09d948df 100644
--- a/tests/compose/filters/docker-compose.yml
+++ b/tests/compose/filters/docker-compose.yml
@@ -40,8 +40,11 @@ services:
     volumes:
       - "/mailu/data:/data"
       - "/mailu/dkim:/dkim"
+    dns:
+      - 192.168.203.254
     depends_on:
       - redis
+      - resolver
 
   imap:
     image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${PINNED_MAILU_VERSION:-local}
@@ -81,7 +84,13 @@ services:
     volumes:
       - "/mailu/filter:/data"
 
-
+  resolver:
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}unbound:${MAILU_VERSION:-local}
+    env_file: mailu.env
+    restart: always
+    networks:
+      default:
+        ipv4_address: 192.168.203.254
 
   # Webmail
 
diff --git a/tests/compose/rainloop/docker-compose.yml b/tests/compose/rainloop/docker-compose.yml
index 62d5890f..ca8d70ba 100644
--- a/tests/compose/rainloop/docker-compose.yml
+++ b/tests/compose/rainloop/docker-compose.yml
@@ -42,6 +42,9 @@ services:
       - "/mailu/dkim:/dkim"
     depends_on:
       - redis
+      - resolver
+    dns:
+      - 192.168.203.254
 
   imap:
     image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${PINNED_MAILU_VERSION:-local}
@@ -75,7 +78,13 @@ services:
 
   # Optional services
 
-
+  resolver:
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}unbound:${MAILU_VERSION:-local}
+    env_file: mailu.env
+    restart: always
+    networks:
+      default:
+        ipv4_address: 192.168.203.254
 
   # Webmail
   webmail:
diff --git a/tests/compose/roundcube/docker-compose.yml b/tests/compose/roundcube/docker-compose.yml
index 0bb54e8c..7ac94810 100644
--- a/tests/compose/roundcube/docker-compose.yml
+++ b/tests/compose/roundcube/docker-compose.yml
@@ -42,6 +42,9 @@ services:
       - "/mailu/dkim:/dkim"
     depends_on:
       - redis
+      - resolver
+    dns:
+      - 192.168.203.254
 
   imap:
     image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${PINNED_MAILU_VERSION:-local}
@@ -75,7 +78,13 @@ services:
 
   # Optional services
 
-
+  resolver:
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}unbound:${MAILU_VERSION:-local}
+    env_file: mailu.env
+    restart: always
+    networks:
+      default:
+        ipv4_address: 192.168.203.254
 
   # Webmail
   webmail:
diff --git a/tests/compose/webdav/docker-compose.yml b/tests/compose/webdav/docker-compose.yml
index a597b2d2..7c62c90a 100644
--- a/tests/compose/webdav/docker-compose.yml
+++ b/tests/compose/webdav/docker-compose.yml
@@ -40,8 +40,11 @@ services:
     volumes:
       - "/mailu/data:/data"
       - "/mailu/dkim:/dkim"
+    dns:
+      - 192.168.203.254
     depends_on:
       - redis
+      - resolver
 
   imap:
     image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${PINNED_MAILU_VERSION:-local}
@@ -82,6 +85,13 @@ services:
     volumes:
       - "/mailu/dav:/data"
 
+  resolver:
+    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}unbound:${MAILU_VERSION:-local}
+    env_file: mailu.env
+    restart: always
+    networks:
+      default:
+        ipv4_address: 192.168.203.254
 
   # Webmail