diff --git a/include/verilated_trace.h b/include/verilated_trace.h
index 91ae42a81..36ba80b4b 100644
--- a/include/verilated_trace.h
+++ b/include/verilated_trace.h
@@ -30,6 +30,7 @@
 #include <condition_variable>
 #include <memory>
 #include <string>
+#include <type_traits>
 #include <unordered_map>
 #include <unordered_set>
 #include <vector>