diff --git a/build/update-version.js b/build/update-version.js
index f4c97f2..0bdfc16 100644
--- a/build/update-version.js
+++ b/build/update-version.js
@@ -16,8 +16,10 @@ console.log(`${consoleStyle.GREEN}Read version from manifest.json.${consoleStyle
 
 // Update the version number
 const versionNums = manifest.version.split('.'); // Split the version numbers into individual strings
-versionNums[versionNums.length-1] = Number(versionNums[versionNums.length-1])+1;  // Add one to the last version number position
-manifest.version = versionNums.join('.'); // Combine the version numbers back int a whoel string
+const lastSegment = versionNums[versionNums.length-1].split("-"); // Other than numbers, the version can optionally end with a hyphen and identifier
+lastSegment[0] = Number(lastSegment[0])+1;  // Add one to the last version number position
+versionNums[versionNums.length-1] = lastSegment.join("-") // Join the last number and identifier back into one string
+manifest.version = versionNums.join('.'); // Combine the version numbers back into a whole string
 
 fs.writeFileSync('dist/manifest.json', JSON.stringify(manifest));
 console.log(`${consoleStyle.GREEN}Updated userscript version.${consoleStyle.RESET} Version: ${consoleStyle.MAGENTA}${manifest.version}${consoleStyle.RESET}`);
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