diff --git a/bases/ecoindex/backend/VERSION b/bases/ecoindex/backend/VERSION
index 7c69a55..a9f7aeb 100644
--- a/bases/ecoindex/backend/VERSION
+++ b/bases/ecoindex/backend/VERSION
@@ -1 +1 @@
-3.7.0
+3.8.0a0
diff --git a/projects/ecoindex_api/pyproject.toml b/projects/ecoindex_api/pyproject.toml
index 020a350..1eec3db 100644
--- a/projects/ecoindex_api/pyproject.toml
+++ b/projects/ecoindex_api/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "ecoindex_api"
-version = "3.7.0"
+version = "3.8.0a0"
 description = "REST API to expose Ecoindex"
 authors = ['Vincent Vatelot <vincent.vatelot@ik.me>']
 license = "Creative Commons BY-NC-ND"