diff --git a/About/Changelog.txt b/About/Changelog.txt
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@@ -1,6 +1,8 @@
 1.2.0.0 (07-24-2021)
 ========================
 Note: Starting from this version, changes only apply to RimWorld 1.3+.
+- source branch for assemblies supporting RimWorld 1.1 and 1.2: https://github.com/lbmaian/JecsTools/tree/rw1.2
+- source branch for assemblies supporting RimWorld 1.0: https://github.com/lbmaian/JecsTools/tree/rw1.0
 Preliminary update to support RimWorld 1.3
 Lots of performance improvements (too many to list - look at the individual commit descriptions since commit d0e37a8 for details)
 New features and fixes: