diff --git a/package.json b/package.json
index dd94d31..dd7acb4 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "dependencies": {
         "hl7.fhir.r4.core": "^4.0.1",
         "hl7.fhir.us.carin-bb": "^1.1.0",
-        "hl7.fhir.us.core": "3.1.1",
+        "hl7.fhir.us.core": "5.0.1",
         "hl7.fhir.us.Davinci-drug-formulary": "^1.0.1",
         "hl7.fhir.us.davinci-pdex": "^1.0.0",
         "hl7.fhir.us.davinci-pdex-plan-net": "^1.0.0",