diff --git a/app-experimental/open-sky-adapter-api/src/requirements.txt b/app-experimental/open-sky-adapter-api/src/requirements.txt
index 4d0d4780..f2ba39f3 100644
--- a/app-experimental/open-sky-adapter-api/src/requirements.txt
+++ b/app-experimental/open-sky-adapter-api/src/requirements.txt
@@ -1,2 +1,2 @@
-flask==1.0.2
+flask==2.3.2
 requests>=2.20.0
\ No newline at end of file