diff --git a/opendrop/util.py b/opendrop/util.py
index c7f9807..fe74b51 100644
--- a/opendrop/util.py
+++ b/opendrop/util.py
@@ -17,13 +17,9 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 """
 
-import base64
-import datetime
-import hashlib
 import io
 import ipaddress
 import os
-import plistlib
 
 import ifaddr
 from libarchive import ffi