diff --git a/.gitignore b/.gitignore
index 0fa7a5c..840c758 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ onig-5.9.2.tar.gz
 /onig-6.1.3.tar.gz
 /onig-6.2.0.tar.gz
 /onig-6.3.0.tar.gz
+/onig-6.4.0.tar.gz
diff --git a/sources b/sources
index aad1cc5..d3ad5cc 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (onig-6.3.0.tar.gz) = 980603696c2bb20efe5874fe9eb830d2c485eee5126d79b0799416da318158d79f4111409c8fc19e67b04d87ff088136d7e7be797e6380011426ec21bc2013bc
+SHA512 (onig-6.4.0.tar.gz) = 476f2110f09eae9b27e0da4b995fa9db46fe6f98f5ef8700b9f1966f9b4bf6db680c6e9e67e1d8d81e759fd8d1787af39c4b38d6681ee4b6405a970c18d583fa