diff --git a/Assets/IsoTools/Docs/CHANGELOG.md b/Assets/IsoTools/Docs/CHANGELOG.md
index 875beff..664841d 100644
--- a/Assets/IsoTools/Docs/CHANGELOG.md
+++ b/Assets/IsoTools/Docs/CHANGELOG.md
@@ -1,3 +1,8 @@
+###### Version 3.1.0
+
+* fix some saving issues in Unity 2018-2019
+* drop legacy Unity versions (before 2017 LTS)
+
 ###### Version 3.0.6
 
 * Minor promo fixes
diff --git a/Assets/IsoTools/Docs/README.md b/Assets/IsoTools/Docs/README.md
index d8f8f48..64e4850 100644
--- a/Assets/IsoTools/Docs/README.md
+++ b/Assets/IsoTools/Docs/README.md
@@ -25,7 +25,7 @@ Make 2.5D isometric game in Unity easy!
 * Intersection of isometric objects is not allowed;
 * Parent-child related isometric objects is not allowed.
 
-Supports Unity 5.5 and newer, both Personal and Pro. Full C# source code included.
+Supports Unity 2017 and newer, both Personal and Pro. Full C# source code included.
 
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