diff --git a/package.json b/package.json
index 744b65c..14e87d6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@fosrl/pangolin",
-    "version": "1.0.0-beta.3",
+    "version": "1.0.0-beta.4",
     "private": true,
     "type": "module",
     "description": "Tunneled Reverse Proxy Management Server with Identity and Access Control and Dashboard UI",
diff --git a/server/lib/config.ts b/server/lib/config.ts
index 3da4ea3..203a644 100644
--- a/server/lib/config.ts
+++ b/server/lib/config.ts
@@ -11,9 +11,9 @@ const portSchema = z.number().positive().gt(0).lte(65535);
 const hostnameSchema = z
     .string()
     .regex(
-        /^(?!-)[a-zA-Z0-9-]{1,63}(?<!-)(\.[a-zA-Z]{2,})*$/,
-        "Invalid hostname. Must be a valid hostname like 'localhost' or 'test.example.com'."
-    );
+        /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$|^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)+([A-Za-z]|[A-Za-z][A-Za-z0-9\-]*[A-Za-z0-9])$/
+    )
+    .or(z.literal("localhost"));
 
 const environmentSchema = z.object({
     app: z.object({