diff --git a/.gitignore b/.gitignore
index b3f5202..f126538 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,6 @@ hlint-1.7.3.tar.gz
 /hlint-1.9.4.tar.gz
 /hlint-1.9.10.tar.gz
 /hlint-1.9.41.tar.gz
+/clock-0.7.2.tar.gz
+/refact-0.3.0.2.tar.gz
+/extra-1.5.1.tar.gz
diff --git a/sources b/sources
index 09cde3f..537f710 100644
--- a/sources
+++ b/sources
@@ -1 +1,4 @@
+SHA512 (clock-0.7.2.tar.gz) = cf44dfca6c0825a003018c68266ef0fe503a9b147aaf784435f6297b365c6d18fc71b63b77a23ee2a3298ace638a35de0c6118e361d43b418a45d4fdd24d57cf
+SHA512 (refact-0.3.0.2.tar.gz) = 18f35a3f563288815645c4ef8e557a08bd9038aca0b3d9af391f9f71b39bbf779b725f037fa682a23e38e31cf7b8e0f4ae412e2af2ec3639c4b2c47a05a45a6e
+SHA512 (extra-1.5.1.tar.gz) = c3a0d7abc589e4a175c5c090b4a850751b0f231a3934db3bb87f4a11044acfcb161aa366789b3c6b5415778578ca126c3469f648fa326fa5ebec0889c59005e8
 SHA512 (hlint-1.9.41.tar.gz) = 085de82dc6bb33de3364bd632f089b7a683c442e4a6c65c9ada8edeb56261ae4bf36d4500b95e71be73de94021e85c1a7112d0d5d946c8df23103fb8f19de0b9