diff --git a/src/tz.cpp b/src/tz.cpp
index 7cbdbcb..8b4576a 100644
--- a/src/tz.cpp
+++ b/src/tz.cpp
@@ -2863,6 +2863,7 @@ struct curl_deleter
     void operator()(CURL* p) const
     {
         ::curl_easy_cleanup(p);
+        ::curl_global_cleanup();
     }
 };