diff --git a/isolated-protonmail-bridge.sh b/isolated-protonmail-bridge.sh
index 689bb88..f455707 100755
--- a/isolated-protonmail-bridge.sh
+++ b/isolated-protonmail-bridge.sh
@@ -11,6 +11,7 @@ nsjail -Mo
        --cwd "${JAIL_HOME}"                                                                    \
        --tmpfsmount /                                                                          \
        --tmpfsmount /tmp --tmpfsmount /run                                                     \
+       --symlink /proc/self/fd:/dev/fd                                                         \
        --bindmount_ro "${HERE}/entrypoint.sh:${JAIL_HOME}/entrypoint.sh"                       \
        --bindmount_ro "${HERE}/gpg-keygen-params.txt:${JAIL_HOME}/gpg-keygen-params.txt"       \
        --bindmount_ro /bin --bindmount_ro /sbin                                                \