diff --git a/DESCRIPTION b/DESCRIPTION
index d9b1eb1..b9737fb 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -2,9 +2,20 @@ Package: NMAR
 Type: Package
 Title: Estimation under not Missing at Random Nonresponse
 Version: 0.1.0
-Authors@R: c(person("Maciej", "Beręsewicz", email = "Maciej.Beresewicz@ue.poznan.pl", role = c("aut", "cre")),
-    person("Igor", "Kołodziej", email = "igor.kolodziej@proton.me", role = "aut"),
-    person("Mateusz", "Iwaniuk", email = "mateusz.iwaniuk11@gmail.com", role = "aut"))
+Authors@R: 
+    c(person(given = "Maciej",
+             family = "Beresewicz",
+             role = c("aut", "cre"),
+             email = "maciej.beresewicz@ue.poznan.pl",
+             comment = c(ORCID = "0000-0002-8281-4301")),
+      person(given = "Igor",
+             family = "Kołodziej",
+             role = c("aut", "ctb"),
+             email = "igor.kolodziej@proton.me"),
+      person(given = "Mateusz",
+             family = "Iwaniuk",
+             role = c("aut", "ctb"),
+             email = "mateusz.iwaniuk11@gmail.com"))
 Description: Methods to estimate finite-population parameters under nonresponse that is not missing at
     random (NMAR, nonignorable). Incorporates auxiliary information and user-specified response models,
     and supports independent samples and complex survey designs via objects from the 'survey' package.