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diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -73,7 +73,7 @@ and Numbers
 gem 'caxlsx'
 ```
 
-**Supported Ruby versions:** Caxlsx supports Ruby 2.7 and newer.
+**Supported Ruby versions:** Caxlsx supports Ruby 2.6 and newer.
 
 ## Usage