diff --git a/updater/src/index.js b/updater/src/index.js
index 8a534be..d13726e 100644
--- a/updater/src/index.js
+++ b/updater/src/index.js
@@ -111,6 +111,7 @@ async function sshGet(host, cmdArgs) {
     const { stdout } = await spawnAsync('ssh', [
       '-i', SSH_KEY,
       '-o', 'StrictHostKeyChecking=no',
+      '-o', 'UserKnownHostsFile=/dev/null',
       '-o', 'ConnectTimeout=2',
       `root@${host}`,
       ...cmdArgs,
@@ -126,6 +127,7 @@ async function sshExec(host, command) {
     const child = spawn('ssh', [
       '-i', SSH_KEY,
       '-o', 'StrictHostKeyChecking=no',
+      '-o', 'UserKnownHostsFile=/dev/null',
       '-o', 'ConnectTimeout=5',
       `root@${host}`,
       'sh', '-c', command,
@@ -202,6 +204,7 @@ async function deploy(target, repoName) {
     const { stdout } = await spawnAsync('ssh', [
       '-i', SSH_KEY,
       '-o', 'StrictHostKeyChecking=no',
+      '-o', 'UserKnownHostsFile=/dev/null',
       `root@${target.host}`,
       'sh', '-c', remoteCmd,
     ], { timeout: 300_000 })