diff --git a/apps/backend/api/README.md b/apps/backend/api/README.md
index 486518f..1a95298 100644
--- a/apps/backend/api/README.md
+++ b/apps/backend/api/README.md
@@ -9,7 +9,7 @@ I decided to go the most straightforward way: to put all the encapsulated logic
 
 ## Stack & ideas
 
-It's Spring 3.0.2 and Hibernate. Users are authenticated by provided JWT. The auth provider is the Keycloak server. The session is stateless. The app is built with the idea of distributed apps in mind. So each app's replica is replaceable and can handle requests in parallel with other ones. The 12-factor app idea was considered at the time of the creation of this application.
+It's Spring 3.1.2 and Hibernate. Users are authenticated by provided JWT. The auth provider is the Keycloak server. The session is stateless. The app is built with the idea of distributed apps in mind. So each app's replica is replaceable and can handle requests in parallel with other ones. The 12-factor app idea was considered at the time of the creation of this application.
 
 The project is divided into 4 layers: Entrypoint, Application, Domain and Infrastructure.
 
diff --git a/apps/backend/tg-notifier/README.md b/apps/backend/tg-notifier/README.md
index 43723ab..0ece4a6 100644
--- a/apps/backend/tg-notifier/README.md
+++ b/apps/backend/tg-notifier/README.md
@@ -2,4 +2,4 @@
 
 It is a small sidekick project with the only goal to send notifications to the Telegram channel of mine. It receives messages over the AMQP bus and performs the notification. API application produces messages on an occasion of event (for instance, when a new car reservation is made).
 
-Spring Boot 3.0.2.
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+Spring Boot 3.1.2.
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