diff --git a/requirements.txt b/requirements.txt
index 4d259de..a72f446 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ certifi==2024.8.30
     #   httpx
 click==8.1.7
     # via typer
-cosl==0.0.43
+cosl==0.0.45
     # via -r requirements.in
 h11==0.14.0
     # via httpcore
@@ -51,12 +51,12 @@ packaging==24.1
     # via pytest
 pluggy==1.5.0
     # via pytest
-pydantic==2.9.2
+pydantic==2.10.1
     # via
     #   -r requirements.in
     #   cosl
     #   pytest-interface-tester
-pydantic-core==2.23.4
+pydantic-core==2.27.1
     # via pydantic
 pytest==8.3.3
     # via pytest-interface-tester
diff --git a/src/charm_config.py b/src/charm_config.py
index 797ae1d..bb97caa 100644
--- a/src/charm_config.py
+++ b/src/charm_config.py
@@ -7,7 +7,7 @@
 import dataclasses
 import logging
 from enum import Enum
-from ipaddress import IPv4Address, ip_network
+from ipaddress import IPv4Address, IPv4Network, ip_network
 
 import ops
 from pydantic import (  # pylint: disable=no-name-in-module,import-error
@@ -58,8 +58,8 @@ class CUConfig(BaseModel):  # pylint: disable=too-few-public-methods
     f1_port: int = Field(ge=1, le=65535)
     n3_interface_name: StrictStr = Field(default="n3", min_length=1)
     n3_ip_address: str = Field(default="192.168.251.6/24")
-    n3_gateway_ip: IPv4Address = Field(default="192.168.251.1")
-    upf_subnet: IPvAnyNetwork = Field(default="192.168.252.0/24")
+    n3_gateway_ip: IPv4Address = Field(default=IPv4Address("192.168.251.1"))
+    upf_subnet: IPvAnyNetwork = Field(default=IPv4Network("192.168.252.0/24"))
     mcc: StrictStr = Field(pattern=r"^\d{3}$")
     mnc: StrictStr = Field(pattern=r"^\d{2}$")
     sst: int = Field(ge=1, le=4)
diff --git a/test-requirements.txt b/test-requirements.txt
index d564d75..4e609f7 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -22,7 +22,7 @@ charset-normalizer==3.3.2
     # via requests
 codespell==2.3.0
     # via -r test-requirements.in
-coverage[toml]==7.6.7
+coverage[toml]==7.6.8
     # via -r test-requirements.in
 cryptography==43.0.1
     # via paramiko
@@ -150,7 +150,7 @@ requests-oauthlib==2.0.0
     # via kubernetes
 rsa==4.9
     # via google-auth
-ruff==0.7.4
+ruff==0.8.0
     # via -r test-requirements.in
 six==1.16.0
     # via