diff --git a/update b/update
index 8c7e827..9f3c7c5 100755
--- a/update
+++ b/update
@@ -8,9 +8,11 @@ for source in $sources; do
     curl --silent $source >> tmp
 done;
 
-sort tmp \
+cat data/free.txt tmp \
+    | sort \
     | uniq \
     | sed '/./,$!d' \
+    | sed -e 's/^ *//' -e 's/ *$//' \
     | awk '{print tolower($0)}' \
     | comm -23 - ./data/blacklist.txt \
     | comm -23 - ./data/disposable.txt > ./data/free.txt