diff --git a/scripts/afterAllArtifactBuild.ts b/scripts/afterAllArtifactBuild.ts
index fa3fed0..cac4cfd 100644
--- a/scripts/afterAllArtifactBuild.ts
+++ b/scripts/afterAllArtifactBuild.ts
@@ -15,7 +15,7 @@ export default async function(info: any) {
       await exec('sudo', ['chmod', '-R', 'g-s', 'squashfs-root'])
 
       // Add command line argument to disable the sandbox
-      await exec('sudo', ['sed', "-i''", 's/^exec \([^;]*\)$/exec \1 --no-sandbox/g', 'squashfs-root/command.sh'])
+      await exec('sudo', ['sed', "-i''", 's/^exec \\([^;]*\\)$/exec \\1 --no-sandbox/g', 'squashfs-root/command.sh'])
       await exec('sudo', ['snap', 'run', 'snapcraft', 'pack', 'squashfs-root', '--output', snapFile])
       await exec('sudo', ['rm', '-rf', 'squashfs-root'])