diff --git a/APIs/openEO/EOAP-CWL.qmd b/APIs/openEO/EOAP-CWL.qmd
index 09b325ff9..e68a799a0 100644
--- a/APIs/openEO/EOAP-CWL.qmd
+++ b/APIs/openEO/EOAP-CWL.qmd
@@ -59,6 +59,7 @@ cwltool \
   --force-docker-pull \
   --no-read-only \
   --parallel \
+  --default-container=alpine:3.17.0 \
   --preserve-environment=AWS_ENDPOINT_URL_S3 \
   --preserve-environment=AWS_ACCESS_KEY_ID \
   --preserve-environment=AWS_SECRET_ACCESS_KEY \