diff --git a/README.md b/README.md
index 4d2eba8..8ab3ad1 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ All traffic goes through the gateway.
 
 # Technology Stack
 
-* Java 21
+* Java 17
 * Spring Boot 3
 * Spring Security
 * JWT (JJWT)