title: Cannot install bazel on Ubuntu 20.04 - invalid EXPKEYSIG
body: <p>I was following the instructions on <a href="https://docs.bazel.build/versions/master/install-ubuntu.html#install-with-installer-ubuntu" rel="noreferrer">https://docs.bazel.build/versions/master/install-ubuntu.html#install-with-installer-ubuntu</a></p>
  
  <p>and trying to install bazel on Ubuntu.</p>
  
  <p>When I run step 2:
  <code>sudo apt update &amp;&amp; sudo apt install bazel</code></p>
  
  <p>I get:</p>
  
  <pre><code>Get:1 https://storage.googleapis.com/bazel-apt stable InRelease [2,256 B]
  Hit:2 http://dl.google.com/linux/chrome/deb stable InRelease                                                         
  Hit:3 http://us.archive.ubuntu.com/ubuntu focal InRelease                            
  Hit:4 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease                    
  Err:1 https://storage.googleapis.com/bazel-apt stable InRelease
    The following signatures were invalid: EXPKEYSIG 3D5919B448457EE0 Bazel Developer (Bazel APT repository key) &lt;bazel-dev@googlegroups.com&gt;
  Hit:5 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease                  
  Hit:6 http://security.ubuntu.com/ubuntu focal-security InRelease                     
  Reading package lists... Done
  W: GPG error: https://storage.googleapis.com/bazel-apt stable InRelease: The following signatures were invalid: EXPKEYSIG 3D5919B448457EE0 Bazel Developer (Bazel APT repository key) &lt;bazel-dev@googlegroups.com&gt;
  E: The repository 'https://storage.googleapis.com/bazel-apt stable InRelease' is not signed.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  </code></pre>
  
  <p>Anyone know how to fix this?</p>