diff --git a/src/lib/Hydra/Plugin/GithubPulls.pm b/src/lib/Hydra/Plugin/GithubPulls.pm
index 293a94c2..6a3cc951 100644
--- a/src/lib/Hydra/Plugin/GithubPulls.pm
+++ b/src/lib/Hydra/Plugin/GithubPulls.pm
@@ -58,6 +58,7 @@ sub fetchInput {
     system("jq -S . < $filename > $tempdir/github-pulls-sorted.json");
     my $storePath = trim(`nix-store --add "$tempdir/github-pulls-sorted.json"`
         or die "cannot copy path $filename to the Nix store.\n");
+    chomp $storePath;
     my $timestamp = time;
     return { storePath => $storePath, revision => strftime "%Y%m%d%H%M%S", gmtime($timestamp) };
 }