diff --git a/include/internal/catch_enum_values_registry.cpp b/include/internal/catch_enum_values_registry.cpp
index a4dd6127..9e6f2ecb 100644
--- a/include/internal/catch_enum_values_registry.cpp
+++ b/include/internal/catch_enum_values_registry.cpp
@@ -10,6 +10,7 @@
 #include "catch_stream.h"
 
 #include <map>
+#include <cassert>
 
 namespace Catch {
 
diff --git a/include/internal/catch_string_manip.h b/include/internal/catch_string_manip.h
index f7aa6d4b..b551ded6 100644
--- a/include/internal/catch_string_manip.h
+++ b/include/internal/catch_string_manip.h
@@ -11,6 +11,7 @@
 
 #include <string>
 #include <iosfwd>
+#include <vector>
 
 namespace Catch {