diff --git a/src/datadog/parse_util.h b/src/datadog/parse_util.h
index c6032867..c8e4e83c 100644
--- a/src/datadog/parse_util.h
+++ b/src/datadog/parse_util.h
@@ -2,6 +2,7 @@
 
 // This component provides parsing-related miscellanea.
 
+#include <cstdint>
 #include <string>
 #include <unordered_map>
 #include <vector>