--- kitinerary-21.04.3/src/lib/pdf/pdfdocument.cpp
+++ kitinerary-21.04.3/src/lib/pdf/pdfdocument.cpp
@@ -206,7 +206,12 @@ static QDateTime parsePdfDateTime(const
     int year, month, day, hour, min, sec, tzHours, tzMins;
     char tz;
 
+#if KPOPPLER_VERSION >= QT_VERSION_CHECK(21, 8, 0)
+    GooString dateString(str);
+    if (!parseDateString(&dateString, &year, &month, &day, &hour, &min, &sec, &tz, &tzHours, &tzMins)) {
+#else
     if (!parseDateString(str, &year, &month, &day, &hour, &min, &sec, &tz, &tzHours, &tzMins)) {
+#endif
         return {};
     }