diff --git a/sources b/sources
index 699c8f9..6ab5b95 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA1 (byaccj1.15_src.tar.gz) = eeabe2a3a3ca9cc56a777fa54238ab093fc525c7
+SHA512 (byaccj1.15_src.tar.gz) = 6423ecca70d21dd0c1dd8366361f6c4420536e099090b18738013fbb6e8e0710ee739e51dfd7f603a64f8761f48cdd1d8dc7844d1b5ec6b792535254d290addc