diff --git a/.buildlibrary b/.buildlibrary
index 3478888..e2584c6 100644
--- a/.buildlibrary
+++ b/.buildlibrary
@@ -1,4 +1,4 @@
-ValidationKey: '615930987'
+ValidationKey: '617921568'
 AcceptedWarnings:
 - 'Warning: package ''.*'' was built under R version'
 - 'Warning: namespace ''.*'' is not available and has been replaced'
diff --git a/CITATION.cff b/CITATION.cff
index 77b824c..4ec34d4 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: 'quitte: Bits and pieces of code to use with quitte-style data frames'
-version: 0.3128.3
-date-released: '2023-11-28'
+version: 0.3128.4
+date-released: '2024-01-30'
 abstract: A collection of functions for easily dealing with quitte-style data frames,
   doing multi-model comparisons and plots.
 authors:
diff --git a/DESCRIPTION b/DESCRIPTION
index 0007df4..977cddc 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Type: Package
 Package: quitte
 Title: Bits and pieces of code to use with quitte-style data frames
-Version: 0.3128.3
-Date: 2023-11-28
+Version: 0.3128.4
+Date: 2024-01-30
 Authors@R: c(
     person("Michaja", "Pehl", , "pehl@pik-potsdam.de", role = c("aut", "cre")),
     person("Nico", "Bauer", , "nicolasb@pik-potsdam.de", role = "aut"),
@@ -59,5 +59,5 @@ VignetteBuilder:
     knitr
 Encoding: UTF-8
 LazyData: TRUE
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.1
 Roxygen: list(markdown = TRUE)
diff --git a/NAMESPACE b/NAMESPACE
index 279ae0d..c020595 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -70,6 +70,7 @@ export(quitteSort)
 export(read.gdx)
 export(read.quitte)
 export(read.snapshot)
+export(read_mif_header)
 export(removeColNa)
 export(replace_column)
 export(replace_column_)
diff --git a/README.md b/README.md
index 15bc9ff..4007c2a 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Bits and pieces of code to use with quitte-style data frames
 
-R package **quitte**, version **0.3128.3**
+R package **quitte**, version **0.3128.4**
 
 [![CRAN status](https://www.r-pkg.org/badges/version/quitte)](https://cran.r-project.org/package=quitte)  [![R build status](https://github.com/pik-piam/quitte/workflows/check/badge.svg)](https://github.com/pik-piam/quitte/actions) [![codecov](https://codecov.io/gh/pik-piam/quitte/branch/master/graph/badge.svg)](https://app.codecov.io/gh/pik-piam/quitte) [![r-universe](https://pik-piam.r-universe.dev/badges/quitte)](https://pik-piam.r-universe.dev/builds)
 
@@ -47,7 +47,7 @@ In case of questions / problems please contact Michaja Pehl <michaja.pehl@pik-po
 
 To cite package **quitte** in publications use:
 
-Pehl M, Bauer N, Hilaire J, Levesque A, Luderer G, Schultes A, Dietrich J, Richters O (2023). _quitte: Bits and pieces of code to use with quitte-style data frames_. R package version 0.3128.3, <https://github.com/pik-piam/quitte>.
+Pehl M, Bauer N, Hilaire J, Levesque A, Luderer G, Schultes A, Dietrich J, Richters O (2024). _quitte: Bits and pieces of code to use with quitte-style data frames_. R package version 0.3128.4, <https://github.com/pik-piam/quitte>.
 
 A BibTeX entry for LaTeX users is
 
@@ -55,8 +55,8 @@ A BibTeX entry for LaTeX users is
 @Manual{,
   title = {quitte: Bits and pieces of code to use with quitte-style data frames},
   author = {Michaja Pehl and Nico Bauer and Jérôme Hilaire and Antoine Levesque and Gunnar Luderer and Anselm Schultes and Jan Philipp Dietrich and Oliver Richters},
-  year = {2023},
-  note = {R package version 0.3128.3},
+  year = {2024},
+  note = {R package version 0.3128.4},
   url = {https://github.com/pik-piam/quitte},
 }
 ```