diff --git a/DESCRIPTION b/DESCRIPTION
index f1c9577..581bb2b 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: geoarrow
 Title: Extension Types for Spatial Data for Use with 'Arrow'
-Version: 0.2.0
+Version: 0.2.1.9000
 Authors@R:
     c(
       person(given = "Dewey",
diff --git a/NEWS.md b/NEWS.md
index 58e28a8..f758df1 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,9 @@
+# geoarrow (development version)
+
+# geoarrow 0.2.1
+
+* Fix undefined behaviour identified by UBSAN (#44).
+
 # geoarrow 0.2.0
 
 * Initial CRAN submission.
diff --git a/cran-comments.md b/cran-comments.md
index 858617d..4c86fc0 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,3 +1,6 @@
+
+Fixes the issue identified on the package check page.
+
 ## R CMD check results
 
 0 errors | 0 warnings | 1 note