diff --git a/release-automation/build.js b/release-automation/build.js
index 6b7782a9..06bc83e8 100644
--- a/release-automation/build.js
+++ b/release-automation/build.js
@@ -1,3 +1,5 @@
+require('./patch-electron-builder');
+
 const pathUtil = require('path');
 const fs = require('fs');
 const builder = require('electron-builder');
diff --git a/release-automation/patch-electron-builder.js b/release-automation/patch-electron-builder.js
new file mode 100644
index 00000000..878adbf9
--- /dev/null
+++ b/release-automation/patch-electron-builder.js
@@ -0,0 +1,26 @@
+// Very bad things happen in here!
+
+const fsPromises = require('fs/promises');
+const pathUtil = require('path');
+const packageJSON = require('../package.json');
+
+// Override https://github.com/electron-userland/electron-builder/blob/14942b70a5da79a5e36e330f64de66ec501b4ac6/packages/app-builder-lib/src/targets/LinuxTargetHelper.ts#L28-L53
+// The upstream Linux file association support is not great so we'll just replace it with the one
+// that we wrote by hand until we can send an upstream-ready PR.
+const LinuxTargetHelper = require('../node_modules/app-builder-lib/out/targets/LinuxTargetHelper.js').LinuxTargetHelper;
+LinuxTargetHelper.prototype.computeMimeTypeFiles = async function (...args) {
+    const tempFile = await this.packager.getTempFile('.xml');
+    console.log(`${packageJSON.name}: LinuxTargetHelper.prototype.computeMimeTypeFiles has been patched. mime.xml to be saved to ${tempFile}`);
+
+    const xmlPath = pathUtil.join(__dirname, '../linux-files/org.turbowarp.TurboWarp.mime.xml');
+    const rawXml = await fsPromises.readFile(xmlPath, 'utf-8');
+    const newXml = rawXml.replace(/org\.turbowarp\.TurboWarp/g, packageJSON.name);
+
+    // Roughly equivalent to fs-extra's outputFile (creates parent directories as needed)
+    await fsPromises.mkdir(pathUtil.dirname(tempFile), {
+        recursive: true
+    });
+    await fsPromises.writeFile(tempFile, newXml);
+
+    return tempFile;
+};