diff --git a/src/nodenorm/handlers/health.py b/src/nodenorm/handlers/health.py
index bfd6c81..19f986a 100644
--- a/src/nodenorm/handlers/health.py
+++ b/src/nodenorm/handlers/health.py
@@ -1,11 +1,23 @@
+import importlib.resources
+import json
+from functools import lru_cache
 from urllib.parse import urlparse
 
 from elasticsearch import AsyncElasticsearch
 
+import nodenorm
 from nodenorm.biolink import BIOLINK_MODEL_VERSION
 from nodenorm.handlers.base import NodeNormalizationBaseHandler
 
 
+@lru_cache(maxsize=None)
+def get_openapi_version() -> str:
+    """Read the API version from the openapi.json spec bundled with the webapp."""
+    openapi_path = importlib.resources.files(nodenorm) / "webapp" / "openapi.json"
+    openapi_spec = json.loads(openapi_path.read_text(encoding="utf-8"))
+    return openapi_spec["info"]["version"]
+
+
 class NodeNormHealthHandler(NodeNormalizationBaseHandler):
     """
     Important Endpoints
@@ -24,6 +36,7 @@ async def get(self):
         parsed_compendia_url = urlparse(compendia_url)
         babel_version = parsed_compendia_url.path.rstrip("/").rsplit("/", maxsplit=1)[-1]
         babel_markdown = f"https://github.com/ncatstranslator/Babel/blob/master/releases/{babel_version}.md"
+        version = get_openapi_version()
         try:
             attributes = [
                 "name",
@@ -46,14 +59,18 @@ async def get(self):
         except Exception:
             status_response = {
                 "status": "error",
+                "version": version,
                 "babel_version": babel_version,
                 "babel_version_url": babel_markdown,
+                "backend": "elasticsearch",
             }
         else:
             status_response = {
                 "status": "running",
+                "version": version,
                 "babel_version": babel_version,
                 "babel_version_url": babel_markdown,
+                "backend": "elasticsearch",
                 "biolink_model_toolkit_version": BIOLINK_MODEL_VERSION,
                 **nodes,
             }
diff --git a/src/nodenorm/webapp/openapi.json b/src/nodenorm/webapp/openapi.json
index 3ac7044..72e4d8a 100644
--- a/src/nodenorm/webapp/openapi.json
+++ b/src/nodenorm/webapp/openapi.json
@@ -2,7 +2,7 @@
   "openapi": "3.1.0",
   "info": {
     "title": "Node Normalization",
-    "version": "2.3.26",
+    "version": "1.0.0",
     "x-translator": {
       "component": "Utility",
       "team": [