diff --git a/test/core/tsi/ssl_transport_security_utils_test.cc b/test/core/tsi/ssl_transport_security_utils_test.cc
index ceb50ee7519..00e14627a14 100644
--- a/test/core/tsi/ssl_transport_security_utils_test.cc
+++ b/test/core/tsi/ssl_transport_security_utils_test.cc
@@ -29,6 +29,7 @@
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/match.h"
+#include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
 
 #include "src/core/tsi/transport_security.h"