diff --git a/bin/compile b/bin/compile
index 4cdf365..e67384b 100755
--- a/bin/compile
+++ b/bin/compile
@@ -109,6 +109,7 @@ mkdir -p $CACHE_DIR
 
 # Purge "old-style" virtualenvs.
 [ -d $CACHE_DIR/$LEGACY_TRIGGER ] && rm -fr $CACHE_DIR/*
+[ -d $CACHE_DIR/$VIRTUALENV_LOC ] && rm -fr $CACHE_DIR/*
 
 # Restore old artifacts from the cache.
 for dir in $CACHED_DIRS; do