diff --git a/dev/Dockerfile b/dev/Dockerfile
index 6c3099a..3d3fa7a 100644
--- a/dev/Dockerfile
+++ b/dev/Dockerfile
@@ -1,6 +1,6 @@
-FROM lscr.io/linuxserver/netbox:3.7.6
+FROM lscr.io/linuxserver/netbox:4.0.6
 
 RUN pip install -U \
     wheel \
     setuptools \
-    netbox-plugin-dns==0.22.8
+    netbox-plugin-dns==1.0.4
diff --git a/dev/configuration.py b/dev/configuration.py
index c81a88b..1927de9 100644
--- a/dev/configuration.py
+++ b/dev/configuration.py
@@ -14,7 +14,7 @@ PLUGINS_CONFIG = {
         "zone_nameservers": ["ns1.example.com", "ns2.example.com"],
         "zone_soa_mname": "ns1.example.com",
         "zone_soa_rname": "admin.example.com",
-        "tolerate_underscores_in_hostnames": False,
+        "tolerate_underscores_in_labels": False,
         "tolerate_leading_underscore_types": [
             "TXT",
             "SRV",