diff --git a/pollen/private/preheat-cache.rkt b/pollen/private/preheat-cache.rkt
index 3c984bd..c829e8b 100644
--- a/pollen/private/preheat-cache.rkt
+++ b/pollen/private/preheat-cache.rkt
@@ -2,9 +2,7 @@
 (require racket/file
          racket/path
          racket/place
-         racket/list
          racket/match
-         sugar/list
          "file-utils.rkt"
          "cache-utils.rkt"
          "log.rkt")
diff --git a/pollen/private/ts.rktd b/pollen/private/ts.rktd
index 9dd51b6..1219cf5 100644
--- a/pollen/private/ts.rktd
+++ b/pollen/private/ts.rktd
@@ -1 +1 @@
-1573008313
+1573157155