diff --git a/.buildlibrary b/.buildlibrary
index e3db442b7..51d851396 100644
--- a/.buildlibrary
+++ b/.buildlibrary
@@ -1,4 +1,4 @@
-ValidationKey: '8511606'
+ValidationKey: '8532152'
 AutocreateReadme: yes
 allowLinterWarnings: no
 AddInReadme: tutorial.md
diff --git a/CITATION.cff b/CITATION.cff
index 9051f4666..d6721615b 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -2,8 +2,8 @@ cff-version: 1.2.0
 message: If you use this software, please cite it using the metadata from this file.
 type: software
 title: 'piamInterfaces: Project specific interfaces to REMIND / MAgPIE'
-version: 0.42.3
-date-released: '2025-02-03'
+version: 0.42.4
+date-released: '2025-02-04'
 abstract: Project specific interfaces to REMIND / MAgPIE.
 authors:
 - family-names: Benke
diff --git a/DESCRIPTION b/DESCRIPTION
index 93e97491a..095f9865e 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Type: Package
 Package: piamInterfaces
 Title: Project specific interfaces to REMIND / MAgPIE
-Version: 0.42.3
-Date: 2025-02-03
+Version: 0.42.4
+Date: 2025-02-04
 Authors@R: c(
     person("Falk", "Benke", , "benke@pik-potsdam.de", role = c("aut", "cre")),
     person("Oliver", "Richters", role = "aut")
diff --git a/README.md b/README.md
index 9e091082f..7bbcbb6b0 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Project specific interfaces to REMIND / MAgPIE
 
-R package **piamInterfaces**, version **0.42.3**
+R package **piamInterfaces**, version **0.42.4**
 
 [![CRAN status](https://www.r-pkg.org/badges/version/piamInterfaces)](https://cran.r-project.org/package=piamInterfaces) [![R build status](https://github.com/pik-piam/piamInterfaces/workflows/check/badge.svg)](https://github.com/pik-piam/piamInterfaces/actions) [![codecov](https://codecov.io/gh/pik-piam/piamInterfaces/branch/master/graph/badge.svg)](https://app.codecov.io/gh/pik-piam/piamInterfaces) [![r-universe](https://pik-piam.r-universe.dev/badges/piamInterfaces)](https://pik-piam.r-universe.dev/builds)
 
@@ -10,6 +10,8 @@ Project specific interfaces to REMIND / MAgPIE.
 
 # Tutorial
 
+To improve the tutorial, edit [`tutorial.md`](./tutorial.md).
+
 - To understand how to submit to the IIASA database, read this
   [REMIND tutorial](https://github.com/remindmodel/remind/blob/develop/tutorials/13_Submit_to_IIASA_database.md).
 - In the following, we differentiate templates (list of variables and corresponding units used in a project)
@@ -70,6 +72,8 @@ remind2::compareScenConf(fileList = c("oldfile.csv", "mappingfile.csv"), row.nam
 ```
 On the PIK cluster, you can run `comparescenconf mapping_AR6.csv` in the `inst/mappings` folder and it will compare to a recent `master` version.
 
+After you adjusted the mapping, run `make test` on Linux (incl. the cluster) or `Rscript -e 'devtools::test(show_report = TRUE)'` on Windows, and various tests will be performed.
+
 ### Renaming a piam_variable
 
 If a variable used as `piam_variable` has to be renamed, please add it with its `old_name` to [`inst/renamed_piam_variables.csv`](./inst/renamed_piam_variables.csv).
@@ -143,7 +147,7 @@ In case of questions / problems please contact Falk Benke <benke@pik-potsdam.de>
 
 To cite package **piamInterfaces** in publications use:
 
-Benke F, Richters O (2025). "piamInterfaces: Project specific interfaces to REMIND / MAgPIE." Version: 0.42.3, <https://github.com/pik-piam/piamInterfaces>.
+Benke F, Richters O (2025). "piamInterfaces: Project specific interfaces to REMIND / MAgPIE." Version: 0.42.4, <https://github.com/pik-piam/piamInterfaces>.
 
 A BibTeX entry for LaTeX users is
 
@@ -151,9 +155,9 @@ A BibTeX entry for LaTeX users is
 @Misc{,
   title = {piamInterfaces: Project specific interfaces to REMIND / MAgPIE},
   author = {Falk Benke and Oliver Richters},
-  date = {2025-02-03},
+  date = {2025-02-04},
   year = {2025},
   url = {https://github.com/pik-piam/piamInterfaces},
-  note = {Version: 0.42.3},
+  note = {Version: 0.42.4},
 }
 ```