diff --git a/pkgs/servers/nominatim/default.nix b/pkgs/servers/nominatim/default.nix
index a666da35f4ca..db126863fe04 100644
--- a/pkgs/servers/nominatim/default.nix
+++ b/pkgs/servers/nominatim/default.nix
@@ -45,6 +45,7 @@ stdenv.mkDerivation rec {
       jinja2
       pyicu
       datrie
+      pyosmium
     ]))
     # python3Packages.pylint  # We don't want to run pylint because the package could break on pylint bumps which is really annoying.
     # python3Packages.pytest  # disabled since I can't get it to run tests anyway