diff --git a/src/buildstream/_workspaces.py b/src/buildstream/_workspaces.py
index ebca148..28859be 100644
--- a/src/buildstream/_workspaces.py
+++ b/src/buildstream/_workspaces.py
@@ -317,7 +317,7 @@
 
         # A project without a directory can happen
         if toplevel_project.directory:
-            self._bst_directory = os.path.join(toplevel_project.directory, ".bst")
+            self._bst_directory = os.path.join(toplevel_project.directory, ".bst2")
             self._workspaces = self._load_config()
         else:
             self._bst_directory = None
diff --git a/tests/frontend/workspace.py b/tests/frontend/workspace.py
index 16b1c81..ce4bc9d 100644
--- a/tests/frontend/workspace.py
+++ b/tests/frontend/workspace.py
@@ -830,8 +830,8 @@
 )
 def test_list_unsupported_workspace(cli, datafiles, workspace_cfg):
     project = str(datafiles)
-    os.makedirs(os.path.join(project, ".bst"))
-    workspace_config_path = os.path.join(project, ".bst", "workspaces.yml")
+    os.makedirs(os.path.join(project, ".bst2"))
+    workspace_config_path = os.path.join(project, ".bst2", "workspaces.yml")
 
     _yaml.roundtrip_dump(workspace_cfg, workspace_config_path)