diff --git a/acmc/omop.py b/acmc/omop.py
index 744dc4991880a6064982c5a5e5cd61ace1827db5..4b8cc4c49868d990467d8cb52642a5689bc2823f 100644
--- a/acmc/omop.py
+++ b/acmc/omop.py
@@ -16,7 +16,9 @@ logger = logging_config.setup_logger()
 
 # constants
 VOCAB_PATH = Path("./vocab/omop")
-DB_PATH = VOCAB_PATH / "omop_54.sqlite"
+OMOP_CDM_Version ="54"
+OMOP_DB_FILENAME = f"omop_{OMOP_CDM_Version}.sqlite"
+DB_PATH = VOCAB_PATH / OMOP_DB_FILENAME
 VERSION_FILE = "omop_version.yaml"
 VERSION_PATH = VOCAB_PATH / VERSION_FILE
 EXPORT_FILE = "omop_export.db"
@@ -24,6 +26,7 @@ EXPORT_FILE = "omop_export.db"
 vocabularies = {
     "source": "OHDSI Athena",
     "url": "https://athena.ohdsi.org/vocabulary/list",
+    "cdm_version": OMOP_CDM_Version,        
     "version": "",
     "vocabularies": [
         {"id": 1, "name": "SNOMED"},  # No license required