diff --git a/lib/move-files.js b/lib/move-files.js
index f7ca2b6..8331d6e 100644
--- a/lib/move-files.js
+++ b/lib/move-files.js
@@ -8,6 +8,8 @@ const sendNotification = require('./send-notification')
 const generateError = require('../templates/error')
 const generateWarning = require('../templates/warn')
 
+const isJson = file => file.endsWith('.json')
+
 const notify = async (args, body) => {
   if (args.sendNotification) {
     const notification = generateNotification(body)
@@ -20,7 +22,7 @@ const updateFile = (errorPath, fileName, content) => writeFileSync(`${errorPath}
 const shouldRetry = content => new Date() >= new Date(content.retries.find(retry => !retry.executed).timestamp)
 
 module.exports = async args => {
-  const fileNames = readdirSync(args.errorPath)
+  const fileNames = readdirSync(args.errorPath).filter(isJson)
   fileNames.forEach(fileName => {
     const content = require(`${args.errorPath}/${fileName}`)
     const retryLength = (content.retries && content.retries.length) || 0