diff --git a/wxdata/source/scwx/provider/iem_api_provider.cpp b/wxdata/source/scwx/provider/iem_api_provider.cpp
index d5752fcb..f2704e54 100644
--- a/wxdata/source/scwx/provider/iem_api_provider.cpp
+++ b/wxdata/source/scwx/provider/iem_api_provider.cpp
@@ -7,6 +7,10 @@
 #include <boost/json.hpp>
 #include <cpr/cpr.h>
 
+#if (__cpp_lib_chrono < 201907L)
+#   include <date/date.h>
+#endif
+
 namespace scwx::provider
 {