diff --git a/device-types/Dell/networking-s4148f-on.yaml b/device-types/Dell/networking-s4148f-on.yaml
index d92f7c2a..9d561dea 100644
--- a/device-types/Dell/networking-s4148f-on.yaml
+++ b/device-types/Dell/networking-s4148f-on.yaml
@@ -32,6 +32,8 @@ interfaces:
     type: 10gbase-x-sfpp
   - name: Ethernet 1/9
     type: 10gbase-x-sfpp
+  - name: Ethernet 1/10
+    type: 10gbase-x-sfpp
   - name: Ethernet 1/11
     type: 10gbase-x-sfpp
   - name: Ethernet 1/12
@@ -50,6 +52,8 @@ interfaces:
     type: 10gbase-x-sfpp
   - name: Ethernet 1/19
     type: 10gbase-x-sfpp
+  - name: Ethernet 1/20
+    type: 10gbase-x-sfpp
   - name: Ethernet 1/21
     type: 10gbase-x-sfpp
   - name: Ethernet 1/22
@@ -88,6 +92,8 @@ interfaces:
     type: 10gbase-x-sfpp
   - name: Ethernet 1/39
     type: 10gbase-x-sfpp
+  - name: Ethernet 1/40
+    type: 10gbase-x-sfpp
   - name: Ethernet 1/41
     type: 10gbase-x-sfpp
   - name: Ethernet 1/42