diff --git a/jdk.nix b/jdk.nix
index 1a65a7a..3f160d4 100644
--- a/jdk.nix
+++ b/jdk.nix
@@ -1,18 +1,27 @@
-{ buildPlatform, hostPlatform, jdk17, which, zip, buildPackages }:
-
+{
+  buildPlatform,
+  hostPlatform,
+  jdk21,
+  which,
+  zip,
+  buildPackages,
+}:
 if buildPlatform == hostPlatform
-then jdk17
-else (jdk17.override {
+then jdk21
+else
+  (jdk21.override {
     # libIDL does not compile in cross-compile scenarios.
     enableGnome2 = false;
-}).overrideAttrs (old: {
+  }).overrideAttrs (old: {
     # lol, nixpkgs can’t get pkgs right
     # AUTOCONF = "${autoconf}/bin/autoconf";
-    nativeBuildInputs = old.nativeBuildInputs ++ [ which zip ];
-    depsBuildBuild = with buildPackages; [ stdenv.cc autoconf ];
-    configureFlags = old.configureFlags ++ [
+    nativeBuildInputs = old.nativeBuildInputs ++ [which zip];
+    depsBuildBuild = with buildPackages; [stdenv.cc autoconf];
+    configureFlags =
+      old.configureFlags
+      ++ [
         "--with-jtreg=no"
         "--disable-hotspot-gtest"
-        "--with-build-jdk=${buildPackages.jdk17}"
-    ];
-})
+        "--with-build-jdk=${buildPackages.jdk21}"
+      ];
+  })
diff --git a/openhab-addons.sha256 b/openhab-addons.sha256
index 3230653..ab85311 100644
--- a/openhab-addons.sha256
+++ b/openhab-addons.sha256
@@ -1 +1 @@
-965b8e64fca915c603b37a96d5fd89875a26d413f478cd7a705270542040e4bb
\ No newline at end of file
+8c3de5e5d9088b7074ca097e6f508caffb41cab1869db3586f41d4440b820540
\ No newline at end of file
diff --git a/openhab.sha256 b/openhab.sha256
index 87bb8fb..5120a01 100644
--- a/openhab.sha256
+++ b/openhab.sha256
@@ -1 +1 @@
-13bef91c96d9c145485d6c0e0328bb1a6bcc54a7e0cb307318b36b3b09491617
\ No newline at end of file
+c71bf0af368e171cc3d58e32ba98d34405569aa787de28cd5e616edbeaf1e019
\ No newline at end of file
diff --git a/version b/version
index bbdf097..32f3eaa 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-4.3.5
\ No newline at end of file
+5.0.1
\ No newline at end of file