diff --git a/.gitignore b/.gitignore
index 8867fde..800c4d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,3 +31,4 @@ ipv6calc-0.73.0.tar.gz
 /ipv6calc-3.1.1.tar.gz
 /ipv6calc-3.2.0.tar.gz
 /ipv6calc-4.0.0.tar.gz
+/ipv6calc-4.0.1.tar.gz
diff --git a/sources b/sources
index 5c033a1..f7c5c54 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (ipv6calc-4.0.0.tar.gz) = 939dfcbe68c6e110acfe23f6f221471bda03ad165f5785bbc9aabd03b3192ab3cdb99df458db79edfa3c3d2f3202f1f2f189b7a9fd9a5ae27a7084de2fbd907d
+SHA512 (ipv6calc-4.0.1.tar.gz) = 6e60f4808b2622235ea9c43c99868798e7014fbee7dc51349cfe2ba28badcc767d45f9e30dc14d3b78c4a88ef2ff80083b4b0be64e93ed17b17817995364b3ce