Update Download.md

Author: mdehoon

wiki/Download.md

@@ -133,7 +133,7 @@ Version 1.76 is the last release to support Python 2.7 and 3.5,
 all later releases require Python 3:
 
 -   [biopython-1.86.tar.gz](http://biopython.org/DIST/biopython-1.86.tar.gz)
-    20Mb -- Source Tarball
+    20Mb -- Source Tarball (28 October 2025)
 -   [biopython-1.86.zip](http://biopython.org/DIST/biopython-1.86.zip)
     21Mb -- Source Zip File
 -   [Pre-compiled wheel files on PyPI](https://pypi.python.org/pypi/biopython/1.86)