Source-backed version compatibility
Rundeck Java version compatibility. Rundeck system requirements state that as of Rundeck 6.0.0, Java 17 is the minimum supported production runtime with support through Java 25.
Quick answer
Documented Java versions
Rundeck system requirements state that as of Rundeck 6.0.0, Java 17 is the minimum supported production runtime with support through Java 25.
Rundeck docs recommend Azul Zulu OpenJDK as the Java distribution used for builds and testing.
high confidence · verified 2026-07-09 · runtime
Primary evidence
Every range above is backed by upstream documentation, tagged source, release notes, or another project-owned primary source.
compatibility.fyi