diff --git a/components/federated_learning/sim_hash.h b/components/federated_learning/sim_hash.h
index 55030d9d2..ab7e57132 100644
--- a/components/federated_learning/sim_hash.h
+++ b/components/federated_learning/sim_hash.h
@@ -5,7 +5,10 @@
 #ifndef COMPONENTS_FEDERATED_LEARNING_SIM_HASH_H_
 #define COMPONENTS_FEDERATED_LEARNING_SIM_HASH_H_
 
+#include <stdint.h>
+
 #include <set>
+#include <string>
 #include <unordered_set>
 
 namespace federated_learning {