diff --git a/index.ts b/index.ts
index 8c5606ec..3e8d6c51 100644
--- a/index.ts
+++ b/index.ts
@@ -15,7 +15,7 @@ import ObserveWriteStream from './lib/observe_write_stream'
 import { parameters, refreshTiming, defaultTiming } from './lib/parameters'
 import { isIPv6 } from 'net'
 import { registerOption, registerFormat, ignoreOption } from './lib/option_converter'
-import { type CoapServerOptions, type requestListener, type CoapRequestParams, type ParametersUpdate, type AgentOptions, type CoapPacket, type Option, type OptionValue } from './models/models'
+import type { CoapServerOptions, requestListener, CoapRequestParams, ParametersUpdate, AgentOptions, CoapPacket, Option, OptionValue } from './models/models'
 
 export let globalAgent = new Agent({ type: 'udp4' })
 export let globalAgentIPv6 = new Agent({ type: 'udp6' })