diff --git a/.github/workflows/setup_notebooks.yml b/.github/workflows/setup_notebooks.yml
index fc32b5e..aa34f2a 100644
--- a/.github/workflows/setup_notebooks.yml
+++ b/.github/workflows/setup_notebooks.yml
@@ -35,7 +35,8 @@ jobs:
       - name: Get NEST version
         run: |
           wget -q -O spack.txt 'https://gitlab.ebrains.eu/ri/tech-hub/platform/esd/ebrains-spack-builds/-/raw/master/spack.yaml?ref_type=heads&inline=false'
-          sed -rn 's/^\s.*nest@([0-9]\.[0-9]).*/\1/p' >> nestvers.txt
+          ls
+          sed -rn 's/^\s.*nest@([0-9]\.[0-9]).*/\1/p' spack.txt >> nestvers.txt
           cat nestvers.txt
           echo "NEST_VERSION = $(cat nestvers.txt)" >> $GITHUB_ENV