diff --git a/.github/workflows/R-CMD-check-all.yaml b/.github/workflows/R-CMD-check-all.yaml
index 5fca463..b0b6ab5 100644
--- a/.github/workflows/R-CMD-check-all.yaml
+++ b/.github/workflows/R-CMD-check-all.yaml
@@ -22,7 +22,9 @@ jobs:
         with:
           filters: |
             testpkg01: 'testpkg01/**'
-            testpkg02: 'testpkg02/**'
+            testpkg02: 
+              - 'testpkg01/R'
+              - 'testpkg02/**'
 
     # JOB to build and test each of modified packages
     checkPackages:
diff --git a/testpkg01/DESCRIPTION b/testpkg01/DESCRIPTION
index 97b997c..f010b50 100644
--- a/testpkg01/DESCRIPTION
+++ b/testpkg01/DESCRIPTION
@@ -1,10 +1,13 @@
 Package: testpkg01
-Title: What the Package Does (One Line, Title Case)
-Version: 0.0.0.9007
+Title: CO2 head 
+Version: 0.0.9010
 Authors@R: 
-    person("First", "Last", , "first.last@example.com", role = c("aut", "cre"),
-           comment = c(ORCID = "YOUR-ORCID-ID"))
-Description: What the package does (one paragraph).
+    person(given = "Kevin",
+           family = "Cazelles",
+           role = c("aut", "cre"),
+           email = "kevin.cazelles@insileco.io",
+           comment = c(ORCID = "0000-0001-6619-9874"))
+Description: Return the head of the CO2 dataset.
 License: MIT + file LICENSE
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)
diff --git a/testpkg02/DESCRIPTION b/testpkg02/DESCRIPTION
index 5e58e37..c546833 100644
--- a/testpkg02/DESCRIPTION
+++ b/testpkg02/DESCRIPTION
@@ -1,11 +1,18 @@
 Package: testpkg02
-Title: What the Package Does (One Line, Title Case)
-Version: 0.0.0.9007
+Title: Call to testpkg01
+Version: 0.0.9010
 Authors@R: 
-    person("First", "Last", , "first.last@example.com", role = c("aut", "cre"),
-           comment = c(ORCID = "YOUR-ORCID-ID"))
-Description: What the package does (one paragraph).
+    person(given = "Kevin",
+           family = "Cazelles",
+           role = c("aut", "cre"),
+           email = "kevin.cazelles@insileco.io",
+           comment = c(ORCID = "0000-0001-6619-9874"))
+Description: Call the one function of testpkg01.
 License: MIT + file LICENSE
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)
 RoxygenNote: 7.2.3
+Imports: 
+    testpkg01
+Remotes:
+    inSileco/monoRepoR/testpkg01
diff --git a/testpkg02/NAMESPACE b/testpkg02/NAMESPACE
index 4acfe29..ca74319 100644
--- a/testpkg02/NAMESPACE
+++ b/testpkg02/NAMESPACE
@@ -1,3 +1,3 @@
 # Generated by roxygen2: do not edit by hand
 
-export(seqRow)
+export(call_hello_co2)
diff --git a/testpkg02/R/call_hello_co2.R b/testpkg02/R/call_hello_co2.R
new file mode 100644
index 0000000..0230fdb
--- /dev/null
+++ b/testpkg02/R/call_hello_co2.R
@@ -0,0 +1,7 @@
+#' Call hello_co2() from `testpkg01`
+#' @export
+#' @examples
+#' call_hello_co2()
+call_hello_co2 <- function() {
+    testpkg01::hello_co2()
+}
\ No newline at end of file
diff --git a/testpkg02/R/seqRow.R b/testpkg02/R/seqRow.R
deleted file mode 100644
index 4723f9c..0000000
--- a/testpkg02/R/seqRow.R
+++ /dev/null
@@ -1,6 +0,0 @@
-#' Sequence based on the number of row of a dataframe
-#' @param x a dataframe.
-#' @export
-seqRow <- function(x) {
-    seq_len(NROW(x))
-}
\ No newline at end of file
diff --git a/testpkg02/man/call_hello_co2.Rd b/testpkg02/man/call_hello_co2.Rd
new file mode 100644
index 0000000..40834b3
--- /dev/null
+++ b/testpkg02/man/call_hello_co2.Rd
@@ -0,0 +1,14 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/call_hello_co2.R
+\name{call_hello_co2}
+\alias{call_hello_co2}
+\title{Call hello_co2() from \code{testpkg01}}
+\usage{
+call_hello_co2()
+}
+\description{
+Call hello_co2() from \code{testpkg01}
+}
+\examples{
+call_hello_co2()
+}
diff --git a/testpkg02/man/seqRow.Rd b/testpkg02/man/seqRow.Rd
deleted file mode 100644
index 22f2727..0000000
--- a/testpkg02/man/seqRow.Rd
+++ /dev/null
@@ -1,14 +0,0 @@
-% Generated by roxygen2: do not edit by hand
-% Please edit documentation in R/seqRow.R
-\name{seqRow}
-\alias{seqRow}
-\title{Sequence based on the number of row of a dataframe}
-\usage{
-seqRow(x)
-}
-\arguments{
-\item{x}{a dataframe.}
-}
-\description{
-Sequence based on the number of row of a dataframe
-}