diff --git a/pkg/gpxsee.nsi b/pkg/gpxsee.nsi
index 562376d5..e6569821 100644
--- a/pkg/gpxsee.nsi
+++ b/pkg/gpxsee.nsi
@@ -131,6 +131,7 @@ Section "QT framework" SEC_QT
   File "Qt5PrintSupport.dll"
   File "Qt5Network.dll"
   File "Qt5Sql.dll"
+  File "Qt5Concurrent.dll"
   File /r "platforms"
   File /r "imageformats"
   File /r "printsupport"
@@ -251,4 +252,4 @@ LangString DESC_LOCALIZATION ${LANG_ENGLISH} \
   !insertmacro MUI_DESCRIPTION_TEXT ${SEC_MSVC} $(DESC_MSVC) 
   !insertmacro MUI_DESCRIPTION_TEXT ${SEC_APP} $(DESC_APP)
   !insertmacro MUI_DESCRIPTION_TEXT ${SEC_LOCALIZATION} $(DESC_LOCALIZATION)
-!insertmacro MUI_FUNCTION_DESCRIPTION_END
\ No newline at end of file
+!insertmacro MUI_FUNCTION_DESCRIPTION_END
diff --git a/pkg/gpxsee64.nsi b/pkg/gpxsee64.nsi
index 58ed5be0..ad3f6cc3 100644
--- a/pkg/gpxsee64.nsi
+++ b/pkg/gpxsee64.nsi
@@ -138,6 +138,7 @@ Section "QT framework" SEC_QT
   File "Qt5PrintSupport.dll"
   File "Qt5Network.dll"
   File "Qt5Sql.dll"
+  File "Qt5Concurrent.dll"
   File /r "platforms"
   File /r "imageformats"
   File /r "printsupport"
@@ -254,4 +255,4 @@ LangString DESC_LOCALIZATION ${LANG_ENGLISH} \
   !insertmacro MUI_DESCRIPTION_TEXT ${SEC_MSVC} $(DESC_MSVC) 
   !insertmacro MUI_DESCRIPTION_TEXT ${SEC_APP} $(DESC_APP)
   !insertmacro MUI_DESCRIPTION_TEXT ${SEC_LOCALIZATION} $(DESC_LOCALIZATION)
-!insertmacro MUI_FUNCTION_DESCRIPTION_END
\ No newline at end of file
+!insertmacro MUI_FUNCTION_DESCRIPTION_END