diff --git a/src/slic3r/Utils/Http.cpp b/src/slic3r/Utils/Http.cpp
index 797207552c..8ec63d7b54 100644
--- a/src/slic3r/Utils/Http.cpp
+++ b/src/slic3r/Utils/Http.cpp
@@ -177,6 +177,7 @@ Http::priv::priv(const std::string &url)
 	::curl_easy_setopt(curl, CURLOPT_URL, url.c_str());   // curl makes a copy internally
 	::curl_easy_setopt(curl, CURLOPT_USERAGENT, SLIC3R_APP_NAME "/" SLIC3R_VERSION);
 	::curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, &error_buffer.front());
+	::curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
 }
 
 Http::priv::~priv()