diff --git a/.github/workflows/post-release-mergeback.yml b/.github/workflows/post-release-mergeback.yml
index 70d684086..647173531 100644
--- a/.github/workflows/post-release-mergeback.yml
+++ b/.github/workflows/post-release-mergeback.yml
@@ -74,9 +74,11 @@ jobs:
           set +e # don't fail on an errored command
           git ls-remote --tags origin | grep "$VERSION"
           EXISTS="$?"
-          if [ "$EXISTS" -ne 0 ]; then
-             echo "::set-output name=exists::true"
-             echo "Tag $TAG exists. Not going to re-release."
+          if [ "$EXISTS" -eq 0 ]; then
+            echo "Tag $TAG exists. Not going to re-release."
+            echo "::set-output name=exists::true"
+          else
+            echo "Tag $TAG does not exist yet."
           fi
 
       # we didn't tag the release during the update-release-branch workflow because the
@@ -88,6 +90,7 @@ jobs:
           VERSION: ${{ steps.getVersion.outputs.version }}
         run: |
           git tag -a "$VERSION" -m "$VERSION"
+          git fetch --unshallow  # unshallow the repo in order to allow pushes
           git push origin --follow-tags "$VERSION"
 
       - name: Create mergeback branch
diff --git a/package-lock.json b/package-lock.json
index 800f636b1..99cb0899f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "codeql",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "codeql",
-      "version": "1.0.0",
+      "version": "1.0.1",
       "license": "MIT",
       "dependencies": {
         "@actions/core": "^1.2.6",
diff --git a/package.json b/package.json
index 9dd4a7a3d..577a1de58 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codeql",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "private": true,
   "description": "CodeQL action",
   "scripts": {
diff --git a/runner/package-lock.json b/runner/package-lock.json
index 4e545fd05..45d0185b7 100644
--- a/runner/package-lock.json
+++ b/runner/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "codeql-runner",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/runner/package.json b/runner/package.json
index 0acba5fbf..39ea30d5a 100644
--- a/runner/package.json
+++ b/runner/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codeql-runner",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "private": true,
   "description": "CodeQL runner",
   "scripts": {