diff --git a/server-sent-events/Dockerfile b/server-sent-events/Dockerfile
index 254212b..cdc8c42 100644
--- a/server-sent-events/Dockerfile
+++ b/server-sent-events/Dockerfile
@@ -1,7 +1,7 @@
 # ================================
 # Build image
 # ================================
-FROM swift:5.10-jammy as build
+FROM swift:6.0-jammy as build
 
 # Install OS updates
 RUN export DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true \