diff --git a/index.js b/index.js
index c702a27..8d688d6 100644
--- a/index.js
+++ b/index.js
@@ -40,9 +40,12 @@ Toolkit.run(async tools => {
     await tools.runInWorkspace('git', ['config', 'user.name', `"${process.env.GITHUB_USER || 'Automated Version Bump'}"`])
     await tools.runInWorkspace('git', ['config', 'user.email', `"${process.env.GITHUB_EMAIL || 'gh-action-bump-version@users.noreply.github.com'}"`])
 
-    const currentBranch = /refs\/[a-zA-Z]+\/(.*)/.exec(process.env.GITHUB_REF)[1]
+    let currentBranch = /refs\/[a-zA-Z]+\/(.*)/.exec(process.env.GITHUB_REF)[1]
+    if (process.env.GITHUB_HEAD_REF) {
+      // Comes from a pull request
+      currentBranch = process.env.GITHUB_HEAD_REF;
+    }
     console.log('currentBranch:', currentBranch)
-
     // do it in the current checked out github branch (DETACHED HEAD)
     // important for further usage of the package.json version
     await tools.runInWorkspace('npm',
@@ -52,6 +55,8 @@ Toolkit.run(async tools => {
     await tools.runInWorkspace('git', ['commit', '-a', '-m', `ci: ${commitMessage} ${newVersion}`])
 
     // now go to the actual branch to perform the same versioning
+    // First fetch to get updated local version of branch
+    await tools.runInWorkspace('git', ['fetch'])
     await tools.runInWorkspace('git', ['checkout', currentBranch])
     await tools.runInWorkspace('npm',
       ['version', '--allow-same-version=true', '--git-tag-version=false', current])