diff --git a/foundation b/foundation
index 9b705e0..04e7c19 160000
--- a/foundation
+++ b/foundation
@@ -1 +1 @@
-Subproject commit 9b705e00c2cea7c25992918bbb85dedd7c9ba8f9
+Subproject commit 04e7c19d3c8b2d733632143630baa47fb9d25123
diff --git a/src/Text.h b/src/Text.h
index 0c7f62c..5f24bc7 100644
--- a/src/Text.h
+++ b/src/Text.h
@@ -33,9 +33,10 @@ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define TEXT_H
 
 #include <string>
+#include <unordered_set>
+#include <vector>
 
 #include "Tokenizer.h"
-#include <unordered_set>
 
 class File;
 class Variable;
diff --git a/src/Tokenizer.h b/src/Tokenizer.h
index 62c255d..2670186 100644
--- a/src/Tokenizer.h
+++ b/src/Tokenizer.h
@@ -34,6 +34,7 @@ IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <filesystem>
 #include <fstream>
+#include <optional>
 #include <string>
 
 class Tokenizer {