diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ Check out https://www.musicco.app for more information or try the demo at https:
 
 # Changelog
 
-## v3.1.0 (in development)
+## v3.1.0
 * Read album art from id3 tag
 * Save "Show old albums" option between sessions
 * Added an option to keep screen on
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diff --git a/index.php b/index.php
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--- a/index.php
+++ b/index.php
@@ -5698,7 +5698,7 @@ function getAbout() {
 			$aboutString.="<div><br/></div>";
 			$aboutString.="<div class='bold big'>Release History</div>";
 			$aboutString.="<ul>";
-				$aboutString.="<div class='bold yellow'>3.1 (in development)</div>";
+				$aboutString.="<div class='bold yellow'>3.1 (12th October 2021)</div>";
 				$aboutString.="<li>Read album art from id3 tag</li>";
 				$aboutString.="<li>Save \"Show old albums\" option between sessions</li>";
 				$aboutString.="<li>Added an option to keep screen on</li>";