diff --git a/CRAN-SUBMISSION b/CRAN-SUBMISSION
new file mode 100644
index 00000000..6ac3cf16
--- /dev/null
+++ b/CRAN-SUBMISSION
@@ -0,0 +1,3 @@
+Version: 0.14.1
+Date: 2023-10-18 18:56:49 UTC
+SHA: d7249f587e027c5f0861e22666f818db5f100602
diff --git a/R/ConvertLongitude.R b/R/ConvertLongitude.R
index 90f3ef45..87b3a64c 100644
--- a/R/ConvertLongitude.R
+++ b/R/ConvertLongitude.R
@@ -11,6 +11,7 @@
 #' Else, a list with vectors `lon` and `group`.
 #'
 #' @examples
+#' data.table::setDTthreads(2)
 #' library(ggplot2)
 #' library(data.table)
 #' data(geopotential)
diff --git a/R/Derivate.R b/R/Derivate.R
index 8c9c519c..7b734efa 100644
--- a/R/Derivate.R
+++ b/R/Derivate.R
@@ -37,6 +37,7 @@
 #' (**in that order**).
 #'
 #' @examples
+#' data.table::setDTthreads(2)
 #' theta <- seq(0, 360, length.out = 20)*pi/180
 #' theta <- theta[-1]
 #' x <- cos(theta)
diff --git a/cran-comments.md b/cran-comments.md
index b382afa8..bc9f3657 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,4 +1,7 @@
 
+This is a resubmission. 
+In this submission I added `data.table::setDTthreads(2)` to examples and tests to only use 2 cores. 
+
 In this submission I removed the gdal dependency. 
 
 ## Test environments
diff --git a/man/ConvertLongitude.Rd b/man/ConvertLongitude.Rd
index 09365729..a829f091 100644
--- a/man/ConvertLongitude.Rd
+++ b/man/ConvertLongitude.Rd
@@ -22,6 +22,7 @@ Else, a list with vectors \code{lon} and \code{group}.
 Converts longitude from [0, 360) to [-180, 180) and vice versa.
 }
 \examples{
+data.table::setDTthreads(2)
 library(ggplot2)
 library(data.table)
 data(geopotential)
diff --git a/man/Derivate.Rd b/man/Derivate.Rd
index cd13dbc9..cf4366c2 100644
--- a/man/Derivate.Rd
+++ b/man/Derivate.Rd
@@ -95,6 +95,7 @@ call \code{Derivate()} and make the appropriate sums. For \code{Divergence()} an
 (\strong{in that order}).
 }
 \examples{
+data.table::setDTthreads(2)
 theta <- seq(0, 360, length.out = 20)*pi/180
 theta <- theta[-1]
 x <- cos(theta)
diff --git a/tests/testthat.R b/tests/testthat.R
index 8a948806..ba134353 100644
--- a/tests/testthat.R
+++ b/tests/testthat.R
@@ -2,4 +2,7 @@ library(testthat)
 library(metR)
 # library(vdiffr)
 
+on_cran <- !isTRUE(as.logical(Sys.getenv("NOT_CRAN", "false")))
+if (on_cran) data.table::setDTthreads(2)
+
 test_check("metR")