diff --git a/.gitignore b/.gitignore
index f9d362a..3b3843d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 /bin
 /obj
+/curl
 /lab01.depend
 /lab01.layout
 /unittest.depend
diff --git a/main.cpp b/main.cpp
index a8dadcb..14e987b 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,5 +1,6 @@
 #include <iostream>
 #include <vector>
+#include <curl/curl.h>
 #include "histogram.h"
 #include "svg.h"
 
@@ -34,6 +35,7 @@ input_data(istream& stream, bool prompt)
 
 int main()
 {
+    curl_global_init(CURL_GLOBAL_ALL);
     Input in = input_data(cin, true);
     vector<size_t> bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);