diff --git a/plugins/experimental/rate_limit/limiter.h b/plugins/experimental/rate_limit/limiter.h
index aef2b2b04a4..4d56ffc9573 100644
--- a/plugins/experimental/rate_limit/limiter.h
+++ b/plugins/experimental/rate_limit/limiter.h
@@ -22,6 +22,7 @@
 #include <atomic>
 #include <chrono>
 #include <string>
+#include <climits>
 
 #include "tscore/ink_config.h"
 #include "ts/ts.h"