diff --git a/GridboxConnectorAddon-dev/config.yaml b/GridboxConnectorAddon-dev/config.yaml
index d940576..7caf9b2 100644
--- a/GridboxConnectorAddon-dev/config.yaml
+++ b/GridboxConnectorAddon-dev/config.yaml
@@ -1,6 +1,6 @@
 # https://developers.home-assistant.io/docs/add-ons/configuration#add-on-config
 name: Viessmann Gridbox Connector (dev)
-version: "2.8.4"
+version: "2.9.0"
 slug: "gridbox_connector_dev"
 description: Development version of Viessmann Gridbox Connector
 url: "https://github.com/unl0ck/homeassistant-addon-viessmann-gridbox/tree/main/GridboxConnectorAddon-dev"
diff --git a/copy_to_dev.sh b/copy_to_dev.sh
index 52a3cf9..e6ef73d 100755
--- a/copy_to_dev.sh
+++ b/copy_to_dev.sh
@@ -17,4 +17,5 @@ echo "New version: $new_version"
 
 #sed -i "s/version: \"$current_version\"/version: \"$new_version\"/g" $yaml_datei
 #sed -i "" "s/version: \"$current_version\"/version: \"$new_version\"/g" $yaml_datei
-sed -i "s/version: \"$current_version\"/version: \"$new_version\"/g" $yaml_datei
\ No newline at end of file
+#sed -i "s/version: \"$current_version\"/version: \"$new_version\"/g" $yaml_datei
+sed -i "s/^version: \".*\"/version: \"$new_version\"/" $yaml_datei
\ No newline at end of file