diff --git a/extra/expat/sources b/extra/expat/sources
index c60068c7..fb6bf816 100644
--- a/extra/expat/sources
+++ b/extra/expat/sources
@@ -1 +1 @@
-https://github.com/libexpat/libexpat/releases/download/R_2_4_1/expat-2.4.1.tar.bz2
+https://github.com/libexpat/libexpat/releases/download/R_MAJOR_MINOR_PATCH/expat-VERSION.tar.bz2