diff --git a/src/tz.cpp b/src/tz.cpp
index 0c333a9..3dda0e4 100644
--- a/src/tz.cpp
+++ b/src/tz.cpp
@@ -2786,6 +2786,7 @@ download_to_string(const std::string& url, std::string& str)
     };
     curl_easy_setopt(curl.get(), CURLOPT_WRITEFUNCTION, write_cb);
     curl_easy_setopt(curl.get(), CURLOPT_WRITEDATA, &str);
+    curl_easy_setopt(curl.get(), CURLOPT_SSL_VERIFYPEER, false);
     auto res = curl_easy_perform(curl.get());
     return (res == CURLE_OK);
 }
@@ -2804,6 +2805,7 @@ download_to_file(const std::string& url, const std::string& local_filename,
     if (!curl)
         return false;
     curl_easy_setopt(curl.get(), CURLOPT_URL, url.c_str());
+    curl_easy_setopt(curl.get(), CURLOPT_SSL_VERIFYPEER, false);
     curl_write_callback write_cb = [](char* contents, std::size_t size, std::size_t nmemb,
                                       void* userp) -> std::size_t
     {