diff --git a/httplib.h b/httplib.h
index 9dd4445..cca4a69 100644
--- a/httplib.h
+++ b/httplib.h
@@ -31,7 +31,7 @@
 #endif
 
 #ifndef CPPHTTPLIB_READ_TIMEOUT_SECOND
-#define CPPHTTPLIB_READ_TIMEOUT_SECOND 5
+#define CPPHTTPLIB_READ_TIMEOUT_SECOND 300
 #endif
 
 #ifndef CPPHTTPLIB_READ_TIMEOUT_USECOND