diff --git a/Dockerfile b/Dockerfile
index 24b2215e3d..236eb97634 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ COPY . .
 
 RUN mvn -f /app/keycloak-theme/pom.xml install
 
-FROM quay.io/keycloak/keycloak:14.0.0
+FROM quay.io/keycloak/keycloak:15.0.0
 COPY --from=builder /app/keycloak-theme/target/classes /opt/jboss/keycloak/themes/keycloak.v2
 
 EXPOSE 8080
diff --git a/start.mjs b/start.mjs
index 390c18feef..cd228903c5 100755
--- a/start.mjs
+++ b/start.mjs
@@ -8,7 +8,7 @@ import decompress from "decompress";
 import decompressTargz from "decompress-targz";
 
 const args = process.argv.slice(2);
-const version = args[0] || "14.0.0";
+const version = args[0] || "15.0.0";
 
 const folder = "server";
 const fileName = path.join(folder, `keycloak-${version}.tar.gz`);