diff --git a/docs/conf.py b/docs/conf.py
index 3a0f140c91715f291946f235877e6b16141c4eee..ad093f1e2e379726902f340068d18a460634f855 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -23,7 +23,7 @@ copyright = '2022, Michele Chiari, Michele De Pascalis, Andrea Franchini'
 author = 'Michele Chiari, Michele De Pascalis, Andrea Franchini'
 
 # The full version, including alpha/beta/rc tags
-release = '2.2.0'
+release = '2.2.1'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/mc_openapi/openapi/model_checker.yaml b/mc_openapi/openapi/model_checker.yaml
index 57d3261d31c784d02c48e23970202a3bdf694a38..6f4e6a4145d102c56e0d567aca80afcd5b765007 100644
--- a/mc_openapi/openapi/model_checker.yaml
+++ b/mc_openapi/openapi/model_checker.yaml
@@ -3,7 +3,7 @@ info:
   license:
     name: Apache-2.0
   title: PIACERE Model Checker
-  version: "2.2.0"
+  version: "2.2.1"
 paths:
   /modelcheck:
     post: