diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 150c42e4..d43cdd57 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,7 +18,7 @@ jobs:
       id: release_tag
       env:
         GITHUB_REF: ${{ github.ref }}
-      run: echo ::set-output name=tag::$(echo ${GITHUB_REF:11})
+      run: echo ::set-env name=GITHUB_TAG::$(echo ${GITHUB_REF:11})
     - name: Cache Python dependencies
       uses: actions/cache@v1
       with:
diff --git a/scripts/addversion.py b/scripts/addversion.py
index 7453a4a1..5d6e9952 100644
--- a/scripts/addversion.py
+++ b/scripts/addversion.py
@@ -1,7 +1,7 @@
 import os
 
 FILENAME_VERSION_H = 'src/version.h'
-version = os.environ.get('GITHUB_REF')
+version = os.environ.get('GITHUB_TAG')
 if version == None:
     version = "SNAPSHOT"