diff --git a/fhirpkg.lock.json b/fhirpkg.lock.json
deleted file mode 100644
index bb4cca0..0000000
--- a/fhirpkg.lock.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "updated": "2025-05-08T09:07:12.7767319+01:00",
-  "dependencies": {
-    "fhir.r4.ukcore.stu3.currentbuild": "0.24.0-pre-release",
-    "hl7.fhir.r4.core": "4.0.1",
-    "hl7.fhir.uv.genomics-reporting": "3.0.0-ballot",
-    "hl7.terminology.r4": "5.3.0",
-    "hl7.fhir.uv.extensions.r4": "5.2.0",
-    "hl7.fhir.uv.ips": "1.1.0",
-    "fhir.dicom": "2022.4.20221006",
-    "hl7.fhir.eu.extensions.r4": "0.1.1-ballot"
-  },
-  "missing": {}
-}
diff --git a/package.json b/package.json
index dfc07b4..936b87a 100644
--- a/package.json
+++ b/package.json
@@ -7,12 +7,10 @@
   ],
   "jurisdiction": "urn:iso:std:iso:3166:-2:GB-ENG",
   "dependencies": {
+    "hl7.fhir.eu.extensions.r4": "0.1.1-ballot",
     "fhir.r4.ukcore.stu3.currentbuild": "0.24.0-pre-release",
-    "hl7.fhir.r4.core": "4.0.1",
     "hl7.fhir.uv.genomics-reporting": "3.0.0-ballot",
-    "hl7.fhir.eu.laboratory": "0.1.1",
-    "hl7.fhir.uv.ips": "1.1.0",
-    "hl7.fhir.eu.extensions.r4": "0.1.1-ballot"
+    "hl7.fhir.uv.ips": "1.1.0"
   }
 }