diff --git a/main.cpp b/main.cpp
index b572383..895af08 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,3 +1,4 @@
+#include <curl/curl.h>
 #include <iostream>
 #include <vector>
 #include "histogram.h"
@@ -34,6 +35,7 @@ input_data(istream& in, bool prompt)
 
 int main()
 {
+    curl_global_init(CURL_GLOBAL_ALL);
     auto in = input_data(cin, true);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);