diff --git a/.ci/install_pdk.sh b/.ci/install_pdk.sh
index 1cc343ca10cc3f0e1c5d722095e2574a99c5afd9..9b45a2eef54dd05c6b4805b7b6cc53b4973423ea 100755
--- a/.ci/install_pdk.sh
+++ b/.ci/install_pdk.sh
@@ -12,6 +12,9 @@ setup_apt() {
 
     wget "${deb_url}"
     sudo dpkg -i "${deb_file}"
+    
+    # Add the non-expiring key from the future endpoint
+    curl -fsSL https://apt.puppetlabs.com/DEB-GPG-KEY-future | sudo apt-key add -
 }
 
 main() {