diff --git a/entrypoint.sh b/entrypoint.sh
index e59aae7..f1db6e2 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -19,6 +19,7 @@ while IFS=  read -r f; do
   docker run --rm \
     -v /run/pcscd/pcscd.comm:/run/pcscd/pcscd.comm:ro \
     -v "${PWD}":/home/user \
+    -e INPUT_USER_PIN \
     git.lerch.org/lobo/pkcs11:1 \
     -s --id "${INPUT_SLOT}" -m SHA256-RSA-PKCS -i "$f" -o "${dest_sig}" --pin env:INPUT_USER_PIN
   ec=$?