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--- a/src/mediaserver/cdplugins/uprcl/uprclindex.py
+++ b/src/mediaserver/cdplugins/uprcl/uprclindex.py
@@ -40,6 +40,7 @@
     f.write("idxabsmlen=0\n")
     f.write("loglevel=2\n")
     f.write("noaspell=1\n")
+    f.write("testmodifusemtime=1\n")
     f.close()
 
     # Only very recent Recoll versions have support for wavpack (only