diff --git a/sources b/sources
index 47eae7a..3eafb55 100644
--- a/sources
+++ b/sources
@@ -1 +1,2 @@
 SHA512 (gjs-1.68.3.tar.xz) = 1b93bdce97b81ec439cde7824491661fc7e4296464a41e4357fc902ec62024e855a4dec24ae7dcb01ec57d4a0019ab2c4aff0b3c08fb94c7beecdefe34226d46
+SHA512 (firefox-78.10.0esr.source.tar.xz) = 5e2cf137dc781855542c29df6152fa74ba749801640ade3cf01487ce993786b87a4f603d25c0af9323e67c7e15c75655523428c1c1426527b8623c7ded9f5946