diff --git a/flaskr/geocoder.py b/flaskr/geocoder.py
index b315e01..92b31a2 100644
--- a/flaskr/geocoder.py
+++ b/flaskr/geocoder.py
@@ -21,3 +21,6 @@ class CachedGeocoder:
                 addressdetails=True,  # only works with Nominatim /!.
             )
         return self.cache[address]
+
+    def close(self):
+        self.cache.close()
--
libgit2 0.21.2