diff --git a/DESCRIPTION b/DESCRIPTION
index 7ae4a4cd9e..3098bf0244 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: tern
 Title: Create Common TLGs Used in Clinical Trials
-Version: 0.9.1
-Date: 2023-10-02
+Version: 0.9.1.9000
+Date: 2023-10-04
 Authors@R: c(
     person("Joe", "Zhu", , "joe.zhu@roche.com", role = c("aut", "cre")),
     person("Daniel", "Sabanés Bové", , "daniel.sabanes_bove@roche.com", role = "aut"),
diff --git a/NEWS.md b/NEWS.md
index 52151a4822..99ae050914 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,5 @@
+# tern 0.9.1.9000
+
 # tern 0.9.1
 ### New Features
 * Added `imputation_rule` function to apply imputation rule to data.