diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f092ce7..95d7828 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -31,7 +31,7 @@ jobs:
 
       - name: Determine new tag
         id: newtag
-        run: echo "::set-output name=tag::$(date +'%Y%m%d%H%M%S')"
+        run: echo "::set-output name=tag::$(date +'%Y%m%dT%H%M%S')"
 
       - name: Create Git Tag
         run: git tag ${{ steps.newtag.outputs.tag }} && git push origin ${{ steps.newtag.outputs.tag }}