diff --git a/.gitignore b/.gitignore
index 9593401..dd8de82 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /semigroups-0.8.4.1.tar.gz
 /semigroups-0.8.5.tar.gz
 /semigroups-0.16.0.1.tar.gz
+/semigroups-0.16.2.2.tar.gz
diff --git a/sources b/sources
index 6c75e40..d29f182 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-992f0f6349a9e1ebe933c327a3e38c41  semigroups-0.16.0.1.tar.gz
+728f760bca161acdccbe23dfb4fb43db  semigroups-0.16.2.2.tar.gz