diff --git a/.gitignore b/.gitignore
index ffb83ae..860bfba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /Imath-3.0.2.tar.gz
 /Imath-3.1.2.tar.gz
+/Imath-3.1.3.tar.gz
diff --git a/sources b/sources
index c9db1dd..7612fd1 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (Imath-3.1.2.tar.gz) = 17d795f5cc44589b55bf921b93b576a7248c1bcd746f34220833378ba7c836af7cf842d96d98c09b9c3b11000cc1762dd5340dad30b51720fc6bcaea0c7af5d0
+SHA512 (Imath-3.1.3.tar.gz) = a11f5e736bc49098d735c7903f186c15b03efbec082a8cf2e6635546368035cec0d36c7ae64bfd01bd8eeffb2dd247b8dab19e440a3e1fe33008edacc1268f75