diff --git a/dom0/fpf-apt-test-repo.sls b/dom0/fpf-apt-test-repo.sls
index bc25a8b7..776d59e0 100644
--- a/dom0/fpf-apt-test-repo.sls
+++ b/dom0/fpf-apt-test-repo.sls
@@ -29,6 +29,7 @@ configure apt-test apt repo:
     - name: "deb [arch=amd64] https://apt-test-qubes.freedom.press stretch main"
     - file: /etc/apt/sources.list.d/securedrop_workstation.list
     - key_url: "salt://sd/sd-workstation/apt-test-pubkey.asc"
+    - clean_file: True # squash file to ensure there are no duplicates
     - require:
       - pkg: install-python-apt-for-repo-config