diff --git a/.github/workflows/CI_apptainer.yml b/.github/workflows/CI_apptainer.yml
index 427b1ce1..76583b65 100644
--- a/.github/workflows/CI_apptainer.yml
+++ b/.github/workflows/CI_apptainer.yml
@@ -37,4 +37,4 @@ jobs:
           TMPDIR=$(mktemp -d)
           cp pysr.sif $TMPDIR
           cd $TMPDIR
-          apptainer test ./pysr.sif
+          sudo apptainer test ./pysr.sif