diff --git a/.gitignore b/.gitignore
index 5fc6782..48ee990 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@ wcslib-4.3.1.tar.gz
 /wcslib-4.25.1.tar.bz2
 /wcslib-5.14.tar.bz2
 /wcslib-5.16.tar.bz2
+/wcslib-5.18.tar.bz2
diff --git a/sources b/sources
index e326ef3..bbb85f3 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (wcslib-5.16.tar.bz2) = bf7ab586995bdade8b96c77dee891c7d7ab6de82a7e2f94a09d89643e93658063f832efdb66e0bba11ad114b6e0ca555cba9308a84f0f22fb833e3a6303cefe6
+SHA512 (wcslib-5.18.tar.bz2) = f75f4153d5cec6ec7e140a9c1431dfbf7aae06c0fc9d0c79da2c9cfc9b7c3e0118dd726086fcc35ab29d9cdee45d5f762052b1eb150e12d8806028c145a76750