diff --git a/.darcs-boringfile b/.darcs-boringfile
index bc032565f..77110e38e 100644
--- a/.darcs-boringfile
+++ b/.darcs-boringfile
@@ -59,3 +59,5 @@
 # version.py is generated at build time, and never checked in
 ^src/allmydata/version\.py$
 
+^src/foolscap/build($|/)
+^src/zfec/zfec.egg-info($|/)