diff --git a/molecule/default/prepare.yml b/molecule/default/prepare.yml
index 969d03ea5..bacdea137 100644
--- a/molecule/default/prepare.yml
+++ b/molecule/default/prepare.yml
@@ -8,6 +8,8 @@
       docker_network:
         name: test_docker_network
         driver: bridge
+        driver_options:
+          com.docker.network.driver.mtu: 1440
         enable_ipv6: false
         internal: false
         ipam_config:
diff --git a/molecule/postgrespro/prepare.yml b/molecule/postgrespro/prepare.yml
index 32f70f378..440f1b650 100644
--- a/molecule/postgrespro/prepare.yml
+++ b/molecule/postgrespro/prepare.yml
@@ -8,6 +8,8 @@
       docker_network:
         name: test_docker_network
         driver: bridge
+        driver_options:
+          com.docker.network.driver.mtu: 1440
         enable_ipv6: false
         internal: false
         ipam_config: