diff --git a/.gitignore b/.gitignore
index 16e6239..9895389 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@
 /libcxx-8.0.0rc4.src.tar.xz
 /libcxx-8.0.0.src.tar.xz
 /libcxx-9.0.0.src.tar.xz
+/libcxx-9.0.1.src.tar.xz
diff --git a/sources b/sources
index 0af6462..3e587ee 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (libcxx-9.0.0.src.tar.xz) = cbaca724c4f3e3a270dfd53aac50cbb920190fe55486b164d52e73845819dd22afb10c23f5875da59d433fd5b96a0f153208746117309ac1267a38fa56f4818e
+SHA512 (libcxx-9.0.1.src.tar.xz) = aabbc98c5bd6935d3dabfb309dfc171fbc16441396628d22d8dcdb89a5015f8fdedef4237134b841314d572205f7d5cfe44c1c8900db0f0156810f7810376bb2