diff --git a/ci/build.py b/ci/build.py
index 590c14f..624fd1a 100644
--- a/ci/build.py
+++ b/ci/build.py
@@ -38,7 +38,9 @@ run("free -h")
 
 # Setup attic
 attic = (
-    build("nix build --inputs-from . nixpkgs#attic-client --print-build-logs --print-out-paths --no-link")
+    build(
+        "nix build --inputs-from . nixpkgs#attic-client --print-build-logs --print-out-paths --no-link"
+    )
     + "/bin/attic"
 )
 run(f"'{attic}' login ci {ATTIC_SERVER} '{ATTIC_TOKEN}'")