diff --git a/trustgraph-base/pyproject.toml b/trustgraph-base/pyproject.toml
index e4a640bd..4f1bce76 100644
--- a/trustgraph-base/pyproject.toml
+++ b/trustgraph-base/pyproject.toml
@@ -15,6 +15,7 @@ dependencies = [
     "requests",
     "python-logging-loki",
     "pika",
+    "pyyaml",
 ]
 classifiers = [
     "Programming Language :: Python :: 3",
@@ -34,4 +35,4 @@ include = ["trustgraph*"]
 "trustgraph.i18n.packs" = ["*.json"]
 
 [tool.setuptools.dynamic]
-version = {attr = "trustgraph.base_version.__version__"}
\ No newline at end of file
+version = {attr = "trustgraph.base_version.__version__"}