diff --git a/.buildlibrary b/.buildlibrary
index 52f9bddb..43819f71 100644
--- a/.buildlibrary
+++ b/.buildlibrary
@@ -1,4 +1,4 @@
-ValidationKey: '30140712'
+ValidationKey: '30160620'
 AutocreateReadme: yes
 AcceptedWarnings:
 - 'Warning: package .* was built under R version'
diff --git a/CITATION.cff b/CITATION.cff
index 0828b5b5..7da2c592 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -2,7 +2,7 @@ cff-version: 1.2.0
 message: If you use this software, please cite it using the metadata from this file.
 type: software
 title: 'mrmagpie: madrat based MAgPIE Input Data Library'
-version: 1.51.4
+version: 1.51.5
 date-released: '2024-07-04'
 abstract: Provides functions for MAgPIE country and cellular input data generation.
 authors:
diff --git a/DESCRIPTION b/DESCRIPTION
index d2534735..649fc788 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Type: Package
 Package: mrmagpie
 Title: madrat based MAgPIE Input Data Library
-Version: 1.51.4
+Version: 1.51.5
 Date: 2024-07-04
 Authors@R: c(
     person("Kristine", "Karstens", , "karstens@pik-potsdam.de", role = c("aut", "cre")),
diff --git a/R/calcIrrigation.R b/R/calcIrrigation.R
index 532d1c6b..0b2ffe12 100644
--- a/R/calcIrrigation.R
+++ b/R/calcIrrigation.R
@@ -69,7 +69,7 @@ calcIrrigation <- function(lpjml = c(natveg = "LPJmL4_for_MAgPIE_44ac93de", crop
   getSets(totalCropland) <- c("x", "y", "iso", "year", "irrigation")
 
   weightCropArea <- collapseNames(totalCropland[, , "irrigated"]) +
-    rainfedweight * collapseNames(totalCropland[, , "rainfed"])
+    rainfedweight * collapseNames(totalCropland[, , "rainfed"]) + 10e-10
 
   # Reduce to 59199 cells
   if (cells == "magpiecell") {
diff --git a/README.md b/README.md
index 4f1208ea..6a81f1d9 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # madrat based MAgPIE Input Data Library
 
-R package **mrmagpie**, version **1.51.4**
+R package **mrmagpie**, version **1.51.5**
 
 [![CRAN status](https://www.r-pkg.org/badges/version/mrmagpie)](https://cran.r-project.org/package=mrmagpie) [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.4319612.svg)](https://doi.org/10.5281/zenodo.4319612) [![R build status](https://github.com/pik-piam/mrmagpie/workflows/check/badge.svg)](https://github.com/pik-piam/mrmagpie/actions) [![codecov](https://codecov.io/gh/pik-piam/mrmagpie/branch/master/graph/badge.svg)](https://app.codecov.io/gh/pik-piam/mrmagpie) [![r-universe](https://pik-piam.r-universe.dev/badges/mrmagpie)](https://pik-piam.r-universe.dev/builds)
 
@@ -39,7 +39,7 @@ In case of questions / problems please contact Kristine Karstens <karstens@pik-p
 
 To cite package **mrmagpie** in publications use:
 
-Karstens K, Dietrich J, Chen D, Windisch M, Alves M, Beier F, Köberle A, v. Jeetze P, Mishra A, Humpenoeder F, Sauer P (2024). _mrmagpie: madrat based MAgPIE Input Data Library_. doi:10.5281/zenodo.4319612 <https://doi.org/10.5281/zenodo.4319612>, R package version 1.51.4, <https://github.com/pik-piam/mrmagpie>.
+Karstens K, Dietrich J, Chen D, Windisch M, Alves M, Beier F, Köberle A, v. Jeetze P, Mishra A, Humpenoeder F, Sauer P (2024). _mrmagpie: madrat based MAgPIE Input Data Library_. doi:10.5281/zenodo.4319612 <https://doi.org/10.5281/zenodo.4319612>, R package version 1.51.5, <https://github.com/pik-piam/mrmagpie>.
 
 A BibTeX entry for LaTeX users is
 
@@ -48,7 +48,7 @@ A BibTeX entry for LaTeX users is
   title = {mrmagpie: madrat based MAgPIE Input Data Library},
   author = {Kristine Karstens and Jan Philipp Dietrich and David Chen and Michael Windisch and Marcos Alves and Felicitas Beier and Alexandre Köberle and Patrick {v. Jeetze} and Abhijeet Mishra and Florian Humpenoeder and Pascal Sauer},
   year = {2024},
-  note = {R package version 1.51.4},
+  note = {R package version 1.51.5},
   url = {https://github.com/pik-piam/mrmagpie},
   doi = {10.5281/zenodo.4319612},
 }