diff --git a/DESCRIPTION b/DESCRIPTION
index fecd29f..0d7691b 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: msSPChelpR
 Title: Helper Functions for Second Primary Cancer Analyses
-Version: 0.9.0.9000
+Version: 0.9.1
 Authors@R: c(
     person(given = "Marian", family = "Eberl", role = c("aut", "cre"), email = "marian.eberl@tum.de", comment = c(ORCID = "0000-0001-6584-3197"))
     )
diff --git a/NEWS.md b/NEWS.md
index 8c0802e..178b043 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# msSPChelpR (development version)
+# msSPChelpR 0.9.1
 
 ### New Features
 * new function `histgroup_iarc()` to create variable for groups of malignant neoplasms considered to be histologically 'different' for the purpose of defining multiple tumors, ICD-O-3 (see #100)