diff --git a/DESCRIPTION b/DESCRIPTION
index 8d1c4c881..4a175f1c5 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: vctrs
 Title: Vector Helpers
-Version: 0.6.5
+Version: 0.6.5.9000
 Authors@R: c(
     person("Hadley", "Wickham", , "hadley@posit.co", role = "aut"),
     person("Lionel", "Henry", , "lionel@posit.co", role = "aut"),
diff --git a/NEWS.md b/NEWS.md
index 48107b5bd..2cb290516 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,5 @@
+# vctrs (development version)
+
 # vctrs 0.6.5
 
 * Internal changes requested by CRAN around C level format strings (#1896).
diff --git a/src/version.c b/src/version.c
index 7946cd3ca..4edec49e4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -1,7 +1,7 @@
 #define R_NO_REMAP
 #include <Rinternals.h>
 
-const char* vctrs_version = "0.6.5";
+const char* vctrs_version = "0.6.5.9000";
 
 /**
  * This file records the expected package version in the shared