diff --git a/.gitignore b/.gitignore
index b3daeb9ed5b9d79815148b964666f69143c84222..4efd020ba678c7f72011fea88a43aea248a0c537 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@ site
 doc/testing/postman/Responses
 doc/testing/postman/node_modules
 doc/testing/postman/package-lock.json
-.DS_Store
\ No newline at end of file
+.DS_Store
+.idea
\ No newline at end of file
diff --git a/doc/releasenotes.md b/doc/releasenotes.md
index 9ee66d099a5260ad1626e63529f53c3e926060d5..0247c74c545ac2048687e4c469c05f7fa123e6b6 100644
--- a/doc/releasenotes.md
+++ b/doc/releasenotes.md
@@ -25,6 +25,10 @@
 
 ### **Technical Debt Solved**
 
+#### **Upgrade Gunicorn**
+
+Migration of gunicorn from version 22 to 23, due to some vulnerabilities detected. All OpenCAPIF APIs (including "register" and "helper") were upgraded.
+
 #### **Hardening on startup scripts for services interacting with Vault**
 
 The startup scripts of the ***Invoker Management Service***, ***Provider Management Service***, and ***Security Service*** have been improved to ensure reliability when the Vault service takes longer to become ready. These new scripts check responses from the Vault to ensure the returned information is valid before starting each service.