diff --git a/esphome/core/time.h b/esphome/core/time.h
index 1a56e771bd..87ebb5c221 100644
--- a/esphome/core/time.h
+++ b/esphome/core/time.h
@@ -2,6 +2,7 @@
 
 #include <cstdint>
 #include <cstdlib>
+#include <cstring>
 #include <ctime>
 #include <span>
 #include <string>