diff --git a/docker/ant/Dockerfile b/docker/ant/Dockerfile
index 0ccd15b7..f3162c80 100644
--- a/docker/ant/Dockerfile
+++ b/docker/ant/Dockerfile
@@ -1,6 +1,6 @@
 FROM ubuntu:22.04 as downloader
 
-ARG jdk=17
+ARG jdk=21
 ADD provision/jdk/java-${jdk}.sh provision/jdk/java-${jdk}.sh
 RUN provision/jdk/java-${jdk}.sh
 
@@ -22,7 +22,7 @@ WORKDIR workspace
 
 ADD shared/ ./
 
-ARG jdk=17
+ARG jdk=21
 ADD ant/files/jdk-${jdk} ./
 
 COPY --from=downloader /lombok.jar /workspace/lombok.jar
diff --git a/docker/bazel/Dockerfile b/docker/bazel/Dockerfile
index 1e3ece5c..ac48e75d 100644
--- a/docker/bazel/Dockerfile
+++ b/docker/bazel/Dockerfile
@@ -1,6 +1,6 @@
 FROM ubuntu:22.04 as downloader
 
-ARG jdk=17
+ARG jdk=21
 ADD provision/jdk/java-${jdk}.sh provision/jdk/java-${jdk}.sh
 RUN provision/jdk/java-${jdk}.sh
 
@@ -28,7 +28,7 @@ ADD bazel/files/ ./
 
 COPY --from=downloader /lombok.jar /workspace/lombok.jar
 
-ARG jdk=17
+ARG jdk=21
 ENV JDK_VERSION=${jdk}
 ENV JAVA_HOME=/opt/jdk
 ENV BAZEL_HOME=/opt/bazel
diff --git a/docker/gradle/Dockerfile b/docker/gradle/Dockerfile
index 381b0f09..cfb32939 100644
--- a/docker/gradle/Dockerfile
+++ b/docker/gradle/Dockerfile
@@ -1,6 +1,6 @@
 FROM ubuntu:22.04 as downloader
 
-ARG jdk=17
+ARG jdk=21
 ADD provision/jdk/java-${jdk}.sh provision/jdk/java-${jdk}.sh
 RUN provision/jdk/java-${jdk}.sh
 
@@ -25,7 +25,7 @@ ADD gradle/files/ ./
 
 COPY --from=downloader /lombok.jar /workspace/lombok.jar
 
-ARG jdk=17
+ARG jdk=21
 ENV JDK_VERSION=${jdk}
 ENV JAVA_HOME=/opt/jdk
 ENV GRADLE_HOME=/opt/gradle/gradle
diff --git a/docker/maven/Dockerfile b/docker/maven/Dockerfile
index 16d6caf9..baa06c29 100644
--- a/docker/maven/Dockerfile
+++ b/docker/maven/Dockerfile
@@ -1,6 +1,6 @@
 FROM ubuntu:22.04 as downloader
 
-ARG jdk=17
+ARG jdk=21
 ADD provision/jdk/java-${jdk}.sh provision/jdk/java-${jdk}.sh
 RUN provision/jdk/java-${jdk}.sh
 
@@ -22,7 +22,7 @@ WORKDIR workspace
 
 ADD shared/ ./
 
-ARG jdk=17
+ARG jdk=21
 ADD maven/files/jdk-${jdk} ./
 
 COPY --from=downloader /lombok.jar /workspace/lombok.jar
diff --git a/docker/readme.md b/docker/readme.md
index d5995684..b36cd85b 100644
--- a/docker/readme.md
+++ b/docker/readme.md
@@ -10,17 +10,12 @@ Each docker image contains a `/workspace` where all relevant files are located.
 When building the image, a lombok.jar will be downloaded to `/workspace/classpath` and `/workspace/modules`.
 By default, this is the latest released version. You can download a specific version by adding `--build-arg lombokjar=lombok-<major.minor.build>.jar`
 
-### `ARG jdk=13`
+### `ARG jdk=21`
 
 The jdk version to be used. Supported values:
-- `21` (based on openjdk instead of adoptium)
-- `17` (default)
-- `16`
-- `13
-- `12`
+- `21` (default)(based on openjdk instead of adoptium)
+- `17`
 - `11`
-- `10`
-- `9`
 - `8`
 
 The version is also accessible in `JDK_VERSION`.