diff --git a/torba/server/env.py b/torba/server/env.py
index 28dd266e2..d748d536b 100644
--- a/torba/server/env.py
+++ b/torba/server/env.py
@@ -154,6 +154,10 @@ class Env:
         # permitted for an RPC server.
         if for_rpc and not result:
             result = 'localhost'
+        if result == 'localhost':
+            # 'localhost' resolves to ::1 (ipv6) on many systems, which fails on default setup of
+            # docker, using 127.0.0.1 instead forces ipv4
+            result = '127.0.0.1'
         return result
 
     def sane_max_sessions(self):