diff --git a/CHANGELOG b/CHANGELOG
index abd27db2a9..f2f61a2909 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,9 @@
 ChangeLog :
 ===========
 
+2024/05/29 : 3.1-dev0
+    - MINOR: version: mention that it's development again
+
 2024/05/29 : 3.0.0
     - MINOR: sample: implement the uptime sample fetch
     - CI: scripts: fix build of vtest regarding option -C
diff --git a/VERSION b/VERSION
index 4a36342fca..a8457d4dd8 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.0.0
+3.1-dev0
diff --git a/doc/configuration.txt b/doc/configuration.txt
index 6a02988876..443a2aa6bc 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -2,7 +2,7 @@
                                 HAProxy
                           Configuration Manual
                          ----------------------
-                              version 3.0
+                              version 3.1
                               2024/05/29
 
 
diff --git a/doc/intro.txt b/doc/intro.txt
index c3f6cdae5b..4e076a8fc9 100644
--- a/doc/intro.txt
+++ b/doc/intro.txt
@@ -1,7 +1,7 @@
                              -----------------------
                               HAProxy Starter Guide
                              -----------------------
-                                   version 3.0
+                                   version 3.1
 
 
 This document is an introduction to HAProxy for all those who don't know it, as
diff --git a/doc/management.txt b/doc/management.txt
index d0360185f5..76357ecd9d 100644
--- a/doc/management.txt
+++ b/doc/management.txt
@@ -1,7 +1,7 @@
                              ------------------------
                              HAProxy Management Guide
                              ------------------------
-                                   version 3.0
+                                   version 3.1
 
 
 This document describes how to start, stop, manage, and troubleshoot HAProxy,
diff --git a/include/haproxy/version.h b/include/haproxy/version.h
index 11023e6005..1d8d211622 100644
--- a/include/haproxy/version.h
+++ b/include/haproxy/version.h
@@ -33,7 +33,7 @@
 #ifdef  CONFIG_PRODUCT_BRANCH
 #define PRODUCT_BRANCH    CONFIG_PRODUCT_BRANCH
 #else
-#define PRODUCT_BRANCH   "3.0"
+#define PRODUCT_BRANCH   "3.1"
 #endif
 
 #ifdef  CONFIG_PRODUCT_STATUS