diff --git a/.darcs-boringfile b/.darcs-boringfile
index d8d71b344..3d5919c54 100644
--- a/.darcs-boringfile
+++ b/.darcs-boringfile
@@ -61,6 +61,9 @@
 
 ^src/foolscap/build($|/)
 ^src/zfec/zfec.egg-info($|/)
+^src/simplejson/build($|/)
+^src/simplejson/dist($|/)
+^src/simplejson/simplejson\.egg-info/native_libs\.txt$
 
 # this file is maintained by the buildbot
 ^\.buildbot-sourcedata$