diff --git a/nixos/doc/manual/release-notes/rl-2009.xml b/nixos/doc/manual/release-notes/rl-2009.xml
index 900b1103f2b1..9bbbecc05692 100644
--- a/nixos/doc/manual/release-notes/rl-2009.xml
+++ b/nixos/doc/manual/release-notes/rl-2009.xml
@@ -637,6 +637,11 @@ systemd.services.nginx.serviceConfig.ReadWritePaths = [ "/var/www" ];
 }</programlisting>
     </para>
    </listitem>
+   <listitem>
+    <para>
+      <package>netbeans</package> was upgraded to 12.0 and now defaults to OpenJDK 11. This might cause problems if your projects depend on packages that were removed in Java 11.
+    </para>
+   </listitem>
   </itemizedlist>
  </section>
 </section>
diff --git a/pkgs/applications/editors/netbeans/default.nix b/pkgs/applications/editors/netbeans/default.nix
index b2a13e3db7cd..ecc3c058f702 100644
--- a/pkgs/applications/editors/netbeans/default.nix
+++ b/pkgs/applications/editors/netbeans/default.nix
@@ -3,7 +3,7 @@
 }:
 
 let
-  version = "11.3";
+  version = "12.0";
   desktopItem = makeDesktopItem {
     name = "netbeans";
     exec = "netbeans";
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
   inherit version;
   src = fetchurl {
     url = "mirror://apache/netbeans/netbeans/${version}/netbeans-${version}-bin.zip";
-    sha512 = "ae828836138b5a4156d58df24dd4053be58018cb6b5beb179cb0f4cd8b5db72d2a7356a434d01157aacb78d228732950cf4e3a0b6c725da8e053b6ccd91075d6";
+    sha512 = "91030c9628a08acd85f1a58a7f71eec2e57dc85841c1c475cc6311335b5d8cdc10c1198274b9668b7f61a28d04b07661247dc1c3e36b8e29214aec3748e499e4";
   };
 
   buildCommand = ''
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 31c01fda93e7..24520d139e77 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21337,7 +21337,9 @@ in
 
   navit = libsForQt5.callPackage ../applications/misc/navit { };
 
-  netbeans = callPackage ../applications/editors/netbeans { };
+  netbeans = callPackage ../applications/editors/netbeans {
+    jdk = jdk11;
+  };
 
   ncdu = callPackage ../tools/misc/ncdu { };