diff --git a/definitions/region/.gitkeep b/definitions/region/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/definitions/variable/.gitkeep b/definitions/variable/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/nomenclature.yaml b/nomenclature.yaml
index a56b957..5b88f2c 100644
--- a/nomenclature.yaml
+++ b/nomenclature.yaml
@@ -1,7 +1,9 @@
+dimensions:
+  - region
+  - variable
 repositories:
   common-definitions:
     url: https://github.com/IAMconsortium/common-definitions.git/
-    hash: 23b2833
 definitions:
   region:
     repository: common-definitions