diff --git a/projects/pluto/Dockerfile b/projects/pluto/Dockerfile
index 1b6606ced..7b4708d23 100644
--- a/projects/pluto/Dockerfile
+++ b/projects/pluto/Dockerfile
@@ -1,4 +1,4 @@
-FROM openjdk:21
+FROM openjdk:24
 
 ADD build/distributions/pluto-boot-*.tar /opt/
 # Requires the contents of ../mercury/build to be copied to build/mercury
diff --git a/projects/saturn/Dockerfile b/projects/saturn/Dockerfile
index 74036710a..15f27af07 100644
--- a/projects/saturn/Dockerfile
+++ b/projects/saturn/Dockerfile
@@ -1,4 +1,4 @@
-FROM openjdk:21
+FROM openjdk:24
 
 ADD build/distributions/*.tar /opt/