diff --git a/Makefile b/Makefile
index b1c50ce..bc223c9 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ BINSYMDIR=$(PREFIX)/local/bin/
 
 CRITERION_VERSION=2.4.2
 SHUNIT_VERSION=2.1.8
-CURL_VERSION_TAG=8_12_1
+CURL_VERSION_TAG=8_15_0
 CURL_VERSION=$(shell echo $(CURL_VERSION_TAG) | sed -e 's/_/./g')
 OPENSSL_VERSION=3.6.0
 ZLIB_VERSION=1.3.1
diff --git a/stns.c b/stns.c
index b3f0e19..cff60cd 100644
--- a/stns.c
+++ b/stns.c
@@ -99,12 +99,36 @@ int stns_load_config(char *filename, stns_conf_t *c)
   GET_TOML_BYKEY(gid_shift, toml_rtoi, 0, TOML_NULL_OR_INT);
   GET_TOML_BYKEY(cache_ttl, toml_rtoi, 600, TOML_NULL_OR_INT);
   GET_TOML_BYKEY(negative_cache_ttl, toml_rtoi, 10, TOML_NULL_OR_INT);
-  GET_TOML_BYKEY(ssl_verify, toml_rtob, 1, TOML_NULL_OR_INT);
+
+  // Load long type fields via temporary int variables
+  int tmp_ssl_verify = 1;
+  int tmp_request_timeout = 10;
+  int tmp_http_location = 0;
+
+  if (0 != (raw = toml_raw_in(tab, "ssl_verify"))) {
+    if (0 != toml_rtob(raw, &tmp_ssl_verify)) {
+      syslog(LOG_ERR, "%s(stns)[L%d] cannot parse toml file:%s key:ssl_verify", __func__, __LINE__, filename);
+    }
+  }
+  c->ssl_verify = (long)tmp_ssl_verify;
+
+  if (0 != (raw = toml_raw_in(tab, "request_timeout"))) {
+    if (0 != toml_rtoi(raw, &tmp_request_timeout)) {
+      syslog(LOG_ERR, "%s(stns)[L%d] cannot parse toml file:%s key:request_timeout", __func__, __LINE__, filename);
+    }
+  }
+  c->request_timeout = (long)tmp_request_timeout;
+
+  if (0 != (raw = toml_raw_in(tab, "http_location"))) {
+    if (0 != toml_rtob(raw, &tmp_http_location)) {
+      syslog(LOG_ERR, "%s(stns)[L%d] cannot parse toml file:%s key:http_location", __func__, __LINE__, filename);
+    }
+  }
+  c->http_location = (long)tmp_http_location;
+
   GET_TOML_BYKEY(cache, toml_rtob, 1, TOML_NULL_OR_INT);
-  GET_TOML_BYKEY(request_timeout, toml_rtoi, 10, TOML_NULL_OR_INT);
   GET_TOML_BYKEY(request_retry, toml_rtoi, 3, TOML_NULL_OR_INT);
   GET_TOML_BYKEY(request_locktime, toml_rtoi, 60, TOML_NULL_OR_INT);
-  GET_TOML_BYKEY(http_location, toml_rtob, 0, TOML_NULL_OR_INT);
 
   TRIM_SLASH(api_endpoint)
   TRIM_SLASH(cache_dir)
@@ -314,8 +338,8 @@ static CURLcode inner_http_request(stns_conf_t *c, char *path, stns_response_t *
       }
     }
     curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
-    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, c->ssl_verify);
-    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, c->ssl_verify);
+    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, (long)c->ssl_verify);
+    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, (long)c->ssl_verify);
     curl_easy_setopt(curl, CURLOPT_USERAGENT, STNS_VERSION_WITH_NAME);
     if (c->http_location == 1) {
       curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
@@ -347,13 +371,13 @@ static CURLcode inner_http_request(stns_conf_t *c, char *path, stns_response_t *
              "http://unix", path);
   }
   curl_easy_setopt(curl, CURLOPT_URL, url);
-  curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1);
-  curl_easy_setopt(curl, CURLOPT_TIMEOUT, c->request_timeout);
+  curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1L);
+  curl_easy_setopt(curl, CURLOPT_TIMEOUT, (long)c->request_timeout);
   curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, response_callback);
   curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, header_callback);
   curl_easy_setopt(curl, CURLOPT_WRITEDATA, res);
   curl_easy_setopt(curl, CURLOPT_HEADERDATA, c);
-  curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
+  curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1L);
 
 #ifdef DEBUG
   syslog(LOG_ERR, "%s(stns)[L%d] before request http request: %s", __func__, __LINE__, url);
diff --git a/stns.h b/stns.h
index bdc7a33..4a5f83f 100644
--- a/stns.h
+++ b/stns.h
@@ -58,7 +58,7 @@ struct stns_conf_t {
   char *query_wrapper;
   char *chain_ssh_wrapper;
   char *http_proxy;
-  int http_location;
+  long http_location;
   char *cache_dir;
   char *tls_cert;
   char *tls_key;
@@ -68,9 +68,9 @@ struct stns_conf_t {
   stns_user_httpheaders_t *http_headers;
   int uid_shift;
   int gid_shift;
-  int ssl_verify;
+  long ssl_verify;
   int use_cached;
-  int request_timeout;
+  long request_timeout;
   int request_retry;
   int request_locktime;
   int cache;