diff --git a/README.md b/README.md
index fe90cd5..1f333e0 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ set the clipboard to (xml as text)
 
 System Requirements
 -----
-- macOS version   : macOS Big Sur 11, macOS Monterey 12, macOS Ventura 13 or macOS Sonoma 14
+- macOS version   : macOS Monterey 12, macOS Ventura 13 or macOS Sonoma 14
 - Windows version : Windows 10 Version 22H2
 
 
diff --git a/release-notes.txt b/release-notes.txt
index 6ce4ab7..342cf06 100644
--- a/release-notes.txt
+++ b/release-notes.txt
@@ -4,7 +4,7 @@ This software is distributed under the MIT License.
 
 Version: 1.1.0 (in development)
 - Support Apple Silicon on macOS.
-- Add support for macOS Big Sur 11, macOS Monterey 12, macOS Ventura 13 and macOS Sonoma 14.
+- Add support for macOS Monterey 12, macOS Ventura 13 and macOS Sonoma 14.
 - Built with Go 1.21.
 - [INFO] Drop support for 32-bit Windows version.
 - [INFO] Drop support for Windows 10 Version 21H2 or previous.