diff --git a/test/tap/tests/ai_llm_retry_scenarios-t.cpp b/test/tap/tests/ai_llm_retry_scenarios-t.cpp
index 175e74668..211586e19 100644
--- a/test/tap/tests/ai_llm_retry_scenarios-t.cpp
+++ b/test/tap/tests/ai_llm_retry_scenarios-t.cpp
@@ -14,6 +14,7 @@
  */
 
 #include "tap.h"
+#include <string>
 #include <string.h>
 #include <cstdio>
 #include <cstdlib>