diff --git a/src/shrpx.cc b/src/shrpx.cc
index cbde333a..82c23e6e 100644
--- a/src/shrpx.cc
+++ b/src/shrpx.cc
@@ -1485,6 +1485,8 @@ void fill_default_config(Config *config) {
         upstreamconf.alt_mode_option, upstreamconf.encoder_dynamic_table_size);
   }
 
+  http2conf.timeout.stream_write = 1_min;
+
   {
     auto &downstreamconf = http2conf.downstream;