diff --git a/pyproject.toml b/pyproject.toml
index 7c85be55..c512075e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "benchflow"
-version = "0.6.5"
+version = "0.6.6.dev0"
 description = "Multi-turn agent benchmarking with ACP — run any agent, any model, any provider."
 readme = "README.md"
 requires-python = ">=3.12"
diff --git a/uv.lock b/uv.lock
index ea79e524..9a888970 100644
--- a/uv.lock
+++ b/uv.lock
@@ -310,7 +310,7 @@ wheels = [
 
 [[package]]
 name = "benchflow"
-version = "0.6.5"
+version = "0.6.6.dev0"
 source = { editable = "." }
 dependencies = [
     { name = "agent-client-protocol" },