diff --git a/eth/net/nat.nim b/eth/net/nat.nim
index 9e79629..a13f012 100644
--- a/eth/net/nat.nim
+++ b/eth/net/nat.nim
@@ -7,8 +7,9 @@
 # those terms.
 
 import
-  net, options, os, strutils, times,
-  result, nat_traversal/[miniupnpc, natpmp], chronicles
+  options, os, strutils, times,
+  result, nat_traversal/[miniupnpc, natpmp],
+  chronicles, json_serialization/std/net
 
 type
   NatStrategy* = enum