diff --git a/DESCRIPTION b/DESCRIPTION
index 33f792e..12cb835 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: snvecR
 Title: Calculate Earth’s Obliquity and Precession in the Past
-Version: 3.9.0.9000
+Version: 3.9.1
 Authors@R:
     c(person("Ilja", "Kocken", , "ikocken@hawaii.edu", role = c("aut", "cre", "trl", "cph"),
              comment = c(ORCID = "0000-0003-2196-8718")),
diff --git a/NEWS.md b/NEWS.md
index e03a5ee..c88b067 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# snvecR (development version)
+# snvecR 3.9.1
 
 # snvecR 3.9.0
 * Refactor `age` in ka to `time` in kyr throughout.