diff --git a/.cvsignore b/.cvsignore
index e69de29..794d0f1 100644
--- a/.cvsignore
+++ b/.cvsignore
@@ -0,0 +1 @@
+optipng-0.5.4.tar.gz
diff --git a/sources b/sources
index e69de29..935a7be 100644
--- a/sources
+++ b/sources
@@ -0,0 +1 @@
+8d989971e674a06b55e17fc5b70c41aa  optipng-0.5.4.tar.gz