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-rw-r--r--nix/buildkite/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/nix/buildkite/default.nix b/nix/buildkite/default.nix
index 5b9aa222ac4a..4849d1b8ea54 100644
--- a/nix/buildkite/default.nix
+++ b/nix/buildkite/default.nix
@@ -405,7 +405,7 @@ rec {
   mkExtraStep = buildEnabled: cfg:
     let
       step = {
-        key = hashString "sha1" cfg.label;
+        key = hashString "sha1" "${cfg.label}-${cfg.parentLabel}";
         label = ":gear: ${cfg.label} (from ${cfg.parentLabel})";
         skip =
           let