diff --git a/lib/skyapi/src/main/kotlin/skycoin/infrastructure/RequestConfig.kt b/lib/skyapi/src/main/kotlin/skycoin/infrastructure/RequestConfig.kt
index 8642717..bb58624 100644
--- a/lib/skyapi/src/main/kotlin/skycoin/infrastructure/RequestConfig.kt
+++ b/lib/skyapi/src/main/kotlin/skycoin/infrastructure/RequestConfig.kt
@@ -11,6 +11,6 @@ package skycoin.infrastructure
 data class RequestConfig(
     val method: RequestMethod,
     val path: String,
-    val headers: Map<String, String> = mapOf(),
+    val headers: Map<String, Any> = mapOf(),
     val query: Map<String, List<String>> = mapOf()
 )
\ No newline at end of file