diff --git a/third-party/macosx-libevent-config.h b/third-party/macosx-libevent-config.h
index d5ebc7d7c..2da085d85 100644
--- a/third-party/macosx-libevent-config.h
+++ b/third-party/macosx-libevent-config.h
@@ -200,6 +200,9 @@
 /* Define to 1 if you have the `strsep' function. */
 #define HAVE_STRSEP 1
 
+/* Define to 1 if you have the `strtoll' function. */
+#define HAVE_STRTOLL 1
+
 /* Define to 1 if you have the `strtok_r' function. */
 #define HAVE_STRTOK_R 1
 
diff --git a/third-party/macosx-libevent-event-config.h b/third-party/macosx-libevent-event-config.h
index 2249147f5..82a14e8a4 100644
--- a/third-party/macosx-libevent-event-config.h
+++ b/third-party/macosx-libevent-event-config.h
@@ -122,6 +122,9 @@
 /* Define to 1 if you have the `strsep' function. */
 #define _EVENT_HAVE_STRSEP 1
 
+/* Define to 1 if you have the `strtoll' function. */
+#define HAVE_STRTOLL 1
+
 /* Define to 1 if you have the `strtok_r' function. */
 #define _EVENT_HAVE_STRTOK_R 1