diff --git a/.apache-commons-lang.metadata b/.apache-commons-lang.metadata
new file mode 100644
index 0000000..ba703f0
--- /dev/null
+++ b/.apache-commons-lang.metadata
@@ -0,0 +1 @@
+e828934b6e21b41b824a2392cb1a4c62f241d4c3 commons-lang-2.6-src.tar.gz
diff --git a/.gitignore b/.gitignore
index 13695fe..19e8cc4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 SOURCES/commons-lang-2.6-src.tar.gz
+/commons-lang-2.6-src.tar.gz
diff --git a/dead.package.c9s b/dead.package.c9s
deleted file mode 100644
index 8367616..0000000
--- a/dead.package.c9s
+++ /dev/null
@@ -1 +0,0 @@
-apache-commons-lang package is retired for CS-581
\ No newline at end of file
diff --git a/sources b/sources
index 25e3504..b5690d5 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA1 (commons-lang-2.6-src.tar.gz) = e828934b6e21b41b824a2392cb1a4c62f241d4c3
+SHA512 (commons-lang-2.6-src.tar.gz) = 4a30ed153f93fe6616a28974721bdf005d064203ef8a3dd375d6c1176647c0cdbd29cfde2a580e2c8d26bfa4655be6be7025b8ccae94086dcd816676c5cf8e87