diff --git a/src/net/tls.cc b/src/net/tls.cc
index b2914355ca0..00db206e1de 100644
--- a/src/net/tls.cc
+++ b/src/net/tls.cc
@@ -28,6 +28,7 @@ module;
 #include <system_error>
 #include <memory>
 #include <chrono>
+#include <unordered_set>
 
 #include <netinet/in.h>
 #include <sys/stat.h>
diff --git a/src/seastar.cc b/src/seastar.cc
index 88f111d4bde..416faa97c75 100644
--- a/src/seastar.cc
+++ b/src/seastar.cc
@@ -88,6 +88,7 @@ module;
 #include <typeindex>
 #include <type_traits>
 #include <unordered_map>
+#include <unordered_set>
 #include <utility>
 #include <variant>
 #include <vector>