diff --git a/sources b/sources
index 8ac1478..e0b7852 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA1 (antlr-2.7.7.tar.gz) = 3bec329f1c7c9a3d2af1e2389f2e0ed479798a06
+SHA512 (antlr-2.7.7.tar.gz) = 7e05d440513663dab1960974ac61694552583bdd20d6eac2bff27f5142b118a26022d910b44312cdac9164b087c7cd4d1c8325e1ec914f9704b3cdd5f4b2b166