diff --git a/pyproject.toml b/pyproject.toml
index 132f971..e9c0a45 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "oc-api"
-version = "2.2.1"
+version = "2.2.2"
 description = "OpenCitations API"
 authors = [
     {name = "Mario Petrella", email = "mario.petrella@unibo.it"},
@@ -79,4 +79,4 @@ packages = ["src"]
 
 [build-system]
 requires = ["hatchling"]
-build-backend = "hatchling.build"
\ No newline at end of file
+build-backend = "hatchling.build"