diff --git a/.gitignore b/.gitignore
index e69de29..3ecff02 100644
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1 @@
+/public_suffix-2.0.5.gem
diff --git a/sources b/sources
index e69de29..e376327 100644
--- a/sources
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (public_suffix-2.0.5.gem) = d261dec44c11803631e267f36d82a59278d90dceb2811233ca511e895c5f1a58005b6afea980bd1bbd78bbfc7a3a4e02f9f1fbe351fded38be340ecc235da383