diff --git a/src/hooks/issueBranchName.js b/src/hooks/issueBranchName.js
index ff50232..9805ecc 100644
--- a/src/hooks/issueBranchName.js
+++ b/src/hooks/issueBranchName.js
@@ -13,7 +13,7 @@ module.exports = {
         const isBug = issue.labels.length && !!issue.labels.find(label => label.name === 'bug')
         const prefix = isBug ? 'bugfix' : 'feature'
         const branch = issue.title.replace(/[^a-z0-9\s]/gi, '').replaceAll(' ', '-')
-        const branchName = `${prefix}/${issue.number}-${branch}`
+        const branchName = `${prefix}/ISS-${issue.number}-${branch}`
 
         log(`Created branch name ${branchName} in ${repository.full_name}`)
 
diff --git a/src/hooks/issueBranchRef.js b/src/hooks/issueBranchRef.js
index 9bce6a0..9d8e338 100644
--- a/src/hooks/issueBranchRef.js
+++ b/src/hooks/issueBranchRef.js
@@ -13,7 +13,7 @@ module.exports = {
         const { ref, repository } = req.body
         log(`Try referencing ref ${ref} to issue`)
 
-        const regex = /refs\/heads\/(feature|bugfix)\/(\d+)-/
+        const regex = /refs\/heads\/(feature|bugfix)\/ISS-(\d+)-/
         const issueId = regex.exec(ref)[2]
 
         const path = `/repos/${repository.full_name}/issues/${issueId}`