diff --git a/include/sol/pointer_like.hpp b/include/sol/pointer_like.hpp
index 80bf58cb..0a3884c6 100644
--- a/include/sol/pointer_like.hpp
+++ b/include/sol/pointer_like.hpp
@@ -28,6 +28,7 @@
 
 #include <utility>
 #include <type_traits>
+#include <memory>
 
 namespace sol {
 
diff --git a/include/sol/types.hpp b/include/sol/types.hpp
index 568b29a6..e6cc143c 100644
--- a/include/sol/types.hpp
+++ b/include/sol/types.hpp
@@ -40,6 +40,7 @@
 #include <string>
 #include <string_view>
 #include <optional>
+#include <memory>
 #if SOL_IS_ON(SOL_STD_VARIANT)
 #include <variant>
 #endif // variant shenanigans (thanks, Mac OSX)
diff --git a/include/sol/usertype_storage.hpp b/include/sol/usertype_storage.hpp
index fd4564c2..22c2add0 100644
--- a/include/sol/usertype_storage.hpp
+++ b/include/sol/usertype_storage.hpp
@@ -29,6 +29,7 @@
 
 #include <bitset>
 #include <unordered_map>
+#include <memory>
 
 namespace sol { namespace u_detail {
 
diff --git a/tests/run_time/source/customizations.cpp b/tests/run_time/source/customizations.cpp
index fb16afaf..61e5c238 100644
--- a/tests/run_time/source/customizations.cpp
+++ b/tests/run_time/source/customizations.cpp
@@ -25,6 +25,7 @@
 
 #include <catch2/catch_all.hpp>
 
+#include <memory>
 #include <unordered_map>
 #include <vector>
 
diff --git a/tests/run_time/source/usertypes.basic.cpp b/tests/run_time/source/usertypes.basic.cpp
index 13e31547..a03c1c2b 100644
--- a/tests/run_time/source/usertypes.basic.cpp
+++ b/tests/run_time/source/usertypes.basic.cpp
@@ -27,6 +27,8 @@
 
 #include <catch2/catch_all.hpp>
 
+#include <memory>
+
 
 TEST_CASE("usertype/usertype", "Show that we can create classes from usertype and use them") {
 	sol::state lua;
diff --git a/tests/run_time/source/usertypes.member_variables.cpp b/tests/run_time/source/usertypes.member_variables.cpp
index 041aece3..2d5a4621 100644
--- a/tests/run_time/source/usertypes.member_variables.cpp
+++ b/tests/run_time/source/usertypes.member_variables.cpp
@@ -27,6 +27,8 @@
 
 #include <catch2/catch_all.hpp>
 
+#include <memory>
+
 
 TEST_CASE("usertype/member-variables", "allow table-like accessors to behave as member variables for usertype") {
 	sol::state lua;