diff --git a/DESCRIPTION b/DESCRIPTION
index d431afb..6b0ed68 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: atime
 Type: Package
 Title: Asymptotic Timing
-Version: 2024.11.15
+Version: 2024.11.19
 Authors@R: c(
     person("Toby", "Hocking",
      email="toby.hocking@r-project.org",
diff --git a/NEWS b/NEWS
index 3fc20a2..fb957ed 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,7 @@
+Changes in version 2024.11.19
+
+- comment predict(kilobytes) in sparse vignette, for CRAN.
+
 Changes in version 2024.11.15
 
 - only run tests that involve Matrix if it is available.
diff --git a/vignettes/sparse.Rmd b/vignettes/sparse.Rmd
index fda893f..0f89886 100644
--- a/vignettes/sparse.Rmd
+++ b/vignettes/sparse.Rmd
@@ -155,7 +155,7 @@ Below we estimate the throughput for some given limits:
 vec.mat.pred <- predict(
   vec.mat.best,
   seconds=vec.mat.result$seconds.limit,
-  kilobytes=1000,
+  ##kilobytes=1000,#not available on CRAN.
   length=1e6)
 plot(vec.mat.pred)
 ```