diff --git a/.gitignore b/.gitignore
index 5bfcd36..ac7c19b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 SOURCES/IPC-SysV-2.09.tar.gz
+/IPC-SysV-2.09.tar.gz
diff --git a/sources b/sources
index 928d0f8..957ed16 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA1 (IPC-SysV-2.09.tar.gz) = 4e867f228efc5a75af3165efdaeff9821ec725c8
+SHA512 (IPC-SysV-2.09.tar.gz) = b573b9ce11ebe0a3c89932539513ef11489a954a2a37cfd4eb8ccf10b090697123a9cbcf7c19b307c1b2914450833735eeef27deffe84fc82e75465435014201