diff --git a/test/test_drop.cpp b/test/test_drop.cpp
index 9fb209e8..b15cd211 100644
--- a/test/test_drop.cpp
+++ b/test/test_drop.cpp
@@ -11,6 +11,10 @@
 
 #include <array>
 #include <list>
+#include <span>
+#include <string>
+#include <string_view>
+#include <vector>
 
 namespace {