diff --git a/package-lock.json b/package-lock.json
index 6e5a123..7571ff0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,6 +15,7 @@
         "fastify": "^5.6.2",
         "fastify-axios": "^1.3.0",
         "fastify-type-provider-zod": "^6.1.0",
+        "swagger-themes": "^1.4.3",
         "zod": "^4.1.12"
       },
       "devDependencies": {
@@ -2160,6 +2161,12 @@
         "node": ">=8"
       }
     },
+    "node_modules/swagger-themes": {
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/swagger-themes/-/swagger-themes-1.4.3.tgz",
+      "integrity": "sha512-1G0CqJC1IBbNxkAOyJoREd9hfwXH1R6+3GOFxLhQho2w2i+AbaJqkF4mTJhkce4yhaEMUXvv4KKu1YO/qpe6nQ==",
+      "license": "MIT"
+    },
     "node_modules/thread-stream": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/thread-stream/-/thread-stream-3.1.0.tgz",
diff --git a/package.json b/package.json
index 83e0ef0..d98a31e 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "fastify": "^5.6.2",
     "fastify-axios": "^1.3.0",
     "fastify-type-provider-zod": "^6.1.0",
+    "swagger-themes": "^1.4.3",
     "zod": "^4.1.12"
   },
   "devDependencies": {
diff --git a/src/index.ts b/src/index.ts
index d18bb3d..dd50316 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -10,6 +10,7 @@ import {
   validatorCompiler,
   type ZodTypeProvider,
 } from "fastify-type-provider-zod";
+import { SwaggerTheme, SwaggerThemeNameEnum } from "swagger-themes";
 import { z } from "zod";
 import { Config } from "./config.js";
 import { HomeAssistantClient } from "./homeassistant/client.js";
@@ -39,6 +40,9 @@ await fastify.register(fastifySwagger, {
   transform: jsonSchemaTransform,
 });
 
+const theme = new SwaggerTheme();
+const content = theme.getBuffer(SwaggerThemeNameEnum.ONE_DARK);
+
 await fastify.register(fastifySwaggerUi, {
   routePrefix: "/docs",
   indexPrefix: "/api",
@@ -46,6 +50,9 @@ await fastify.register(fastifySwaggerUi, {
     docExpansion: "list",
     deepLinking: false,
   },
+  theme: {
+    css: [{ filename: "theme.css", content: content }],
+  },
 });
 
 await fastify.register(fastifyAxios, {