diff --git a/pyproject.toml b/pyproject.toml
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,6 +42,7 @@ dependencies = [
     "prometheus-client>=0.14.1",
     "starlette-exporter>=0.12.0",
     "PyGObject>=3.42.1",
+    "aiohttp>=3.8.1",
     "rdfdb @ file:///my/proj/rdfdb",
 ]
 requires-python = ">=3.9"