diff --git a/.circleci/config.yml b/.circleci/config.yml
index de2260174..426cd461c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -595,8 +595,14 @@ jobs:
           command: |
             cd /tmp/debian-13-package/tahoe-lafs/
             make -f debian/rules binary
+      - run:
+          name: "Install the built package"
+          command: dpkg -i /tmp/tahoe-lafs_1.20.0-1_all.deb
+      - run:
+          name: "Run our newly system-wide installed tahoe"
+          command: tahoe --version
       - store_artifacts:
-          path: "/tmp/tahoe-lafs_1.20.0-1_all.deb"
+          path: /tmp/tahoe-lafs_1.20.0-1_all.deb
 
   nixos:
     parameters: