diff --git a/nixos/modules/services/continuous-integration/jenkins/default.nix b/nixos/modules/services/continuous-integration/jenkins/default.nix
index 12ba4e342985..66633efef193 100644
--- a/nixos/modules/services/continuous-integration/jenkins/default.nix
+++ b/nixos/modules/services/continuous-integration/jenkins/default.nix
@@ -83,13 +83,13 @@ in
 
       package = lib.mkPackageOption pkgs "jenkins" { };
 
-      javaPackage = lib.mkPackageOption pkgs "jdk21" { };
+      javaPackage = lib.mkPackageOption pkgs "jdk25" { };
 
       packages = lib.mkOption {
         default = [
           pkgs.stdenv
           pkgs.git
-          pkgs.jdk21
+          pkgs.jdk25
           config.programs.ssh.package
           pkgs.nix
         ];
diff --git a/pkgs/by-name/je/jenkins/package.nix b/pkgs/by-name/je/jenkins/package.nix
index f8aa92275e96..cc23ed10c282 100644
--- a/pkgs/by-name/je/jenkins/package.nix
+++ b/pkgs/by-name/je/jenkins/package.nix
@@ -8,7 +8,7 @@
   gnused,
   makeWrapper,
   nix,
-  jdk21,
+  jdk25,
   writeScript,
   nixosTests,
   jq,
@@ -33,10 +33,10 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     cp "$src" "$out/webapps/jenkins.war"
 
     # Create the `jenkins-cli` command.
-    ${jdk21}/bin/jar -xf "$src" WEB-INF/lib/cli-${finalAttrs.version}.jar \
+    ${jdk25}/bin/jar -xf "$src" WEB-INF/lib/cli-${finalAttrs.version}.jar \
       && mv WEB-INF/lib/cli-${finalAttrs.version}.jar "$out/share/jenkins-cli.jar"
 
-    makeWrapper "${jdk21}/bin/java" "$out/bin/jenkins-cli" \
+    makeWrapper "${jdk25}/bin/java" "$out/bin/jenkins-cli" \
       --add-flags "-jar $out/share/jenkins-cli.jar"
   '';