diff --git a/backend/ktor/Dockerfile b/backend/ktor/Dockerfile
index 9a357c24..2893e24f 100644
--- a/backend/ktor/Dockerfile
+++ b/backend/ktor/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1.7@sha256:a57df69d0ea827fb7266491f2813635de6f17269be881f696fbfdf2d83dda33e
 
-FROM eclipse-temurin:17-jdk-jammy@sha256:29467857e8bde40ab1f7befecbda0ea764b95afec1cc7f89aa90f7a766577e19 AS builder
+FROM eclipse-temurin:25-jdk-jammy@sha256:89565961a318534f01c971c7b1d030e60713c66995b887c94010cef938dbc53e AS builder
 
 WORKDIR /workspace
 
@@ -11,7 +11,7 @@ COPY src ./src
 RUN chmod 0755 ./gradlew && \
     ./gradlew installDist --no-daemon --no-build-cache --console=plain
 
-FROM eclipse-temurin:17-jre-jammy@sha256:89e68b9bb83713510b63e2059a415792a7fc77e14b739a7d7ede97f6d9ca2c38
+FROM eclipse-temurin:25-jre-jammy@sha256:10c251954d0bfe1a59ba93505f8c628d755919412400aa98685764c9353605d6
 
 RUN groupadd --gid 10001 studyassistant && \
     useradd --uid 10001 --gid 10001 --no-create-home --shell /usr/sbin/nologin studyassistant