diff --git a/CITATION.cff b/CITATION.cff
index e0f110d..c287761 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -1,5 +1,5 @@
 # -----------------------------------------------------------
-# CITATION file created with {cffr} R package, v0.3.0
+# CITATION file created with {cffr} R package, v0.5.0
 # See also: https://docs.ropensci.org/cffr/
 # -----------------------------------------------------------
  
@@ -8,7 +8,7 @@ message: 'To cite package "MALDIquant" in publications use:'
 type: software
 license: GPL-3.0-or-later
 title: 'MALDIquant: Quantitative Analysis of Mass Spectrometry Data'
-version: 1.22.1
+version: 1.22.1.99
 doi: 10.1093/bioinformatics/bts447
 abstract: A complete analysis pipeline for matrix-assisted laser desorption/ionization-time-of-flight
   (MALDI-TOF) and other two-dimensional mass spectrometry data. In addition to commonly
@@ -46,7 +46,7 @@ preferred-citation:
 repository: https://CRAN.R-project.org/package=MALDIquant
 repository-code: https://github.com/sgibb/MALDIquant/issues/
 url: https://strimmerlab.github.io/software/maldiquant/
-date-released: '2023-03-20'
+date-released: '2023-12-23'
 contact:
 - family-names: Gibb
   given-names: Sebastian
@@ -56,12 +56,12 @@ references:
 - type: software
   title: 'R: A Language and Environment for Statistical Computing'
   notes: Depends
+  url: https://www.R-project.org/
   authors:
   - name: R Core Team
   location:
     name: Vienna, Austria
   year: '2023'
-  url: https://www.R-project.org/
   institution:
     name: R Foundation for Statistical Computing
   version: '>= 4.0.0'
@@ -74,7 +74,6 @@ references:
   location:
     name: Vienna, Austria
   year: '2023'
-  url: https://www.R-project.org/
   institution:
     name: R Foundation for Statistical Computing
 - type: software
@@ -86,30 +85,31 @@ references:
   location:
     name: Vienna, Austria
   year: '2023'
-  url: https://www.R-project.org/
   institution:
     name: R Foundation for Statistical Computing
 - type: software
   title: knitr
   abstract: 'knitr: A General-Purpose Package for Dynamic Report Generation in R'
   notes: Suggests
+  url: https://yihui.org/knitr/
+  repository: https://CRAN.R-project.org/package=knitr
   authors:
   - family-names: Xie
     given-names: Yihui
     email: xie@yihui.name
     orcid: https://orcid.org/0000-0003-0645-5666
   year: '2023'
-  url: https://CRAN.R-project.org/package=knitr
 - type: software
   title: testthat
   abstract: 'testthat: Unit Testing for R'
   notes: Suggests
+  url: https://testthat.r-lib.org
+  repository: https://CRAN.R-project.org/package=testthat
   authors:
   - family-names: Wickham
     given-names: Hadley
-    email: hadley@rstudio.com
+    email: hadley@posit.co
   year: '2023'
-  url: https://CRAN.R-project.org/package=testthat
   version: '>= 0.8'
 identifiers:
 - type: url