diff --git a/src/shrpx.cc b/src/shrpx.cc
index 7ebc98ce..bf16178b 100644
--- a/src/shrpx.cc
+++ b/src/shrpx.cc
@@ -671,13 +671,13 @@ void fill_default_config() {
   mod_config()->http2_upstream_read_timeout = {180, 0};
 
   // Read timeout for non-HTTP2 upstream connection
-  mod_config()->upstream_read_timeout = {30, 0};
+  mod_config()->upstream_read_timeout = {180, 0};
 
   // Write timeout for HTTP2/non-HTTP2 upstream connection
   mod_config()->upstream_write_timeout = {30, 0};
 
   // Read/Write timeouts for downstream connection
-  mod_config()->downstream_read_timeout = {30, 0};
+  mod_config()->downstream_read_timeout = {180, 0};
   mod_config()->downstream_write_timeout = {30, 0};
 
   // Read timeout for HTTP/2 stream