diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 447c16491..c8656406d 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,7 +1,7 @@
 [bumpversion]
 commit = False
 tag = False
-current_version = 1.5.1
+current_version = 1.6.0-alpha.0
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\-(?P<pre>[a-z]+)\.(?P<build>\d+))?
 serialize = 
 	{major}.{minor}.{patch}-{pre}.{build}
diff --git a/README.NL.rst b/README.NL.rst
index 4f27f5abf..5eda058ad 100644
--- a/README.NL.rst
+++ b/README.NL.rst
@@ -2,7 +2,7 @@
 Open Formulieren SDK
 ====================
 
-:Version: 1.5.1
+:Version: 1.6.0-alpha.0
 :Source: https://github.com/open-formulieren/open-forms-sdk
 :Keywords: e-Formulieren, Common Ground, FormIO, API
 
diff --git a/README.rst b/README.rst
index b5a970ec4..c2a0b0a2c 100644
--- a/README.rst
+++ b/README.rst
@@ -2,7 +2,7 @@
 Open Forms SDK
 ==============
 
-:Version: 1.5.1
+:Version: 1.6.0-alpha.0
 :Source: https://github.com/open-formulieren/open-forms-sdk
 :Keywords: e-Formulieren, Common Ground, FormIO, API
 
diff --git a/package.json b/package.json
index eecf89521..dc2e99693 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@open-formulieren/sdk",
-  "version": "1.5.1",
+  "version": "1.6.0-alpha.0",
   "private": true,
   "main": "dist/open-forms-sdk.js",
   "exports": {
diff --git a/publiccode.yaml b/publiccode.yaml
index bfe5cf769..c6d4af4b9 100644
--- a/publiccode.yaml
+++ b/publiccode.yaml
@@ -7,7 +7,7 @@ publiccodeYmlVersion: '0.2'
 name: Open Forms SDK
 url: 'http://github.com/open-formulieren/open-forms-sdk.git'
 softwareType: standalone/frontend
-softwareVersion: 1.5.1
+softwareVersion: 1.6.0-alpha.0
 releaseDate: 't.b.d.'
 logo: 'https://github.com/open-formulieren/open-forms/blob/master/docs/logo.svg'
 platforms: