diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 43e7f3f90f..ecdd6af691 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 5.27.1
+current_version = 5.27.2.dev0
 commit = True
 tag = True
 sign_tags = True
diff --git a/omeroweb/version.py b/omeroweb/version.py
index 75f5e7537e..62de8f85f6 100644
--- a/omeroweb/version.py
+++ b/omeroweb/version.py
@@ -7,5 +7,5 @@
     omero_buildyear = "unknown"
 
 
-omeroweb_version = "5.27.1"
+omeroweb_version = "5.27.2.dev0"
 omeroweb_buildyear = "2024"