diff --git a/VERSION b/VERSION
index 6b89d58f861a7..884ab35c71242 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.12.2
+1.12.3-dev
diff --git a/docs/root/intro/version_history.rst b/docs/root/intro/version_history.rst
index 3f8ec4b70ff7a..da113bf76be56 100644
--- a/docs/root/intro/version_history.rst
+++ b/docs/root/intro/version_history.rst
@@ -1,6 +1,9 @@
 Version history
 ---------------
 
+1.12.3 (Pending)
+================
+
 1.12.2 (December 10, 2019)
 ==========================
 * http: fixed CVE-2019-18801 by allocating sufficient memory for request headers.